4-H STEM programs
University program
STEM is a first-class 4-H program area, with maker curriculum and a find-your-local-club tool through county Extension.
The farm kid's on-ramp to electronics and building, with tools and mentors already in your county.
Visit ↗Checked Aug 30, 2026
AAPCO state lead agency directory
Organization
The association of state pesticide regulators, with the directory of every State Lead Agency.
Who actually enforces pesticide law in your state, and who takes the drift complaint.
Visit ↗Checked Aug 30, 2026
AAPFCO
Organization
The association of state fertilizer regulators. There is no federal fertilizer registration; it is all state law, and AAPFCO writes the model rules behind every bag label.
What the guaranteed analysis and derived-from statement legally mean, and who your state control official is.
Visit ↗Checked Aug 30, 2026
Acres U.S.A.
Publication / media
The oldest publisher on production-scale organic and regenerative farming, since 1971, with a book catalog that is a standing reference library.
Fifty years of eco-agriculture depth; sample it free at EcoFarmingDaily.
Visit ↗Checked Aug 30, 2026
Acres U.S.A. Eco-Ag Conference
Event
The December eco-agriculture conference, nearly fifty years running.
The regenerative old guard and new guard in one hall.
Visit ↗Checked Aug 30, 2026
ADAPT
Standard
The open toolkit and newer JSON standard for reading mixed-fleet precision ag data without writing a parser per equipment brand.
The de facto way your yield and as-applied files become portable.
Visit ↗Checked Aug 30, 2026
Ag Data Coalition
Organization
The farmer-centric neutral data repository founded by universities and farm organizations: store your machine data where you control the sharing.
A working example of a farmer-owned data bank.
Visit ↗Checked Aug 30, 2026
Ag Data Transparent
Organization
The certification that an ag-tech vendor's data contract matches the industry's core principles, plus a free model data-use agreement.
The quickest way to learn to read a farm-data contract before signing one.
Visit ↗Checked Aug 30, 2026
AgFunder News
Publication / media
The news desk of agrifood-tech investment, editorially independent of the VC firm behind it, with the annual investment report the whole sector cites.
See which technologies are getting funded before they show up at the farm store.
Visit ↗Checked Aug 30, 2026
AgGateway
Organization
The industry consortium for digital agriculture connectivity, umbrella over ADAPT, Modus, and PAIL. The specs are free on GitHub with open technical discussion; committee votes cost membership.
The standards your farm data will eventually travel on, readable free.
Visit ↗Checked Aug 30, 2026
AgIsoStack++
Software tool
The only open ISOBUS implementation: a free CAN stack in C++, Arduino, and Rust that lets homemade electronics talk to real tractor equipment.
The key to your tractor's data bus without an OEM toll booth.
Visit ↗Checked Aug 30, 2026
AgML
Dataset
One loader for the public agricultural machine-learning datasets, benchmarks included, millions of labeled images.
If you are training a model on crops, start here instead of scavenging.
Visit ↗Checked Aug 30, 2026
AgOpenGPS
Software tool
Centimeter-accurate tractor autosteer farmers build themselves from off-the-shelf GPS and electronics: a decade of development and probably the most vibrant farmer-built software community anywhere.
Precision guidance for hundreds of dollars instead of tens of thousands, with a forum full of farmers who wired theirs.
Visit ↗Checked Aug 30, 2026
agrirouter
Standard
The manufacturer-neutral data hub connecting machines and ag software across a hundred-plus companies, free for farmers; interoperability between vendor clouds rather than local sovereignty.
Cross-brand data routing today, with eyes open about where your copy lives.
Visit ↗Checked Aug 30, 2026
Agritecture
Organization
The consultancy and media hub for urban and vertical farming: blog, industry census, and farm-planning software.
Sharp commercial analysis of what pencils out indoors and what does not.
Visit ↗Checked Aug 30, 2026
AGROVOC
Standard
FAO's multilingual agricultural thesaurus: forty thousand concepts with stable identifiers, the closest thing to a universal ag vocabulary.
Canonical term identifiers if you are organizing agricultural knowledge, as we do.
Visit ↗Checked Aug 30, 2026
AgStack (Linux Foundation)
Organization
The Linux Foundation's digital public infrastructure for agriculture: open field-boundary identifiers, weather services, and since late 2025 the merged OpenAgri toolset.
Vendor-free building blocks, like a field ID no company owns.
Visit ↗Checked Aug 30, 2026
American Beekeeping Federation
Organization
The eighty-year-old federation for all beekeepers: conference, webinars, and mentorship for sideliners and hobbyists.
The national bee community, from two hives to two thousand.
Visit ↗Checked Aug 30, 2026
American Community Gardening Association
Organization
The binational community-gardening nonprofit since 1978: garden-organizing toolkits, insurance guidance, and an annual conference.
How to start and keep a community garden without learning every lesson the hard way.
Visit ↗Checked Aug 30, 2026
American Dairy Goat Association
Organization
The national dairy goat registry: herd registration, DHI milk testing, and shows.
Papers and production records for the dairy goat herd.
Visit ↗Checked Aug 30, 2026
American Farmland Trust
Organization
No Farms No Food: the farmland protection nonprofit, with the Farmland Information Center and land-access resources.
Help thinking about land access, easements, and keeping farms farms.
Visit ↗Checked Aug 30, 2026
American Honey Producers Association
Organization
The association of commercial honey producers: market advocacy and pricing intelligence.
What honey is actually worth and who is fighting for that price.
Visit ↗Checked Aug 30, 2026
American Horticultural Society
Organization
The member gardening society since 1922: The American Gardener magazine and reciprocal garden admissions.
The genteel wing of American horticulture, with a good magazine.
Visit ↗Checked Aug 30, 2026
American Mushroom Institute
Organization
The trade association of US mushroom growers since 1955: growing practices and Mushroom News.
The commercial mushroom industry's home base.
Visit ↗Checked Aug 30, 2026
American Pastured Poultry Producers Association
Organization
The nonprofit for poultry raised on pasture: the Grit newsletter, processing and marketing know-how, and pastured standards.
Everything the pastured-poultry model has learned, from people doing it for a living.
Visit ↗Checked Aug 30, 2026
American Public Gardens Association
Organization
The association of botanic gardens and arboreta: partnership and education resources.
The demonstration-garden world, useful for education partnerships.
Visit ↗Checked Aug 30, 2026
American Rabbit Breeders Association
Organization
The national rabbit breeder registry and association: breed standards and a local club network.
The rabbit world's registry and its people.
Visit ↗Checked Aug 30, 2026
AmericanHort
Organization
The largest US nursery, greenhouse, and garden-retail trade association, home of the Cultivate conference every July.
The horticulture industry's big tent and its biggest annual show.
Visit ↗Checked Aug 30, 2026
AmHydro
Distributor / manufacturer
One of the oldest US hydroponics firms, Arcata, California since 1984: turnkey NFT leafy-green packages and start-a-farm consulting.
A proven path from zero to commercial lettuce, education included.
Visit ↗Checked Aug 30, 2026
AquaCrop (open source)
Software tool
The open Python implementation of FAO's crop-water productivity model.
Model yield against water before you commit either.
Visit ↗Checked Aug 30, 2026
Aquaponics Association
Organization
The nonprofit for aquaponic growers of all sizes: video library, community forum, and an annual conference.
The fish-and-plants community, from backyard to commercial.
Visit ↗Checked Aug 30, 2026
Ask Extension
Organization
The national ask-an-expert service that routes your question, photos included, to Extension staff.
Submit a question, get an answer from a local expert in days, free.
Visit ↗Checked Aug 30, 2026
Association for Vertical Farming
Organization
The global nonprofit for the indoor and vertical farming industry: network, summits, and education on vertical systems.
The international vertical-farming community in one place.
Visit ↗Checked Aug 30, 2026
Association of Specialty Cut Flower Growers
Organization
The association for local cut-flower farmers: variety trials, grower forums, and The Cut Flower Quarterly.
The flower-farming community and its trial data, if blooms are your crop.
Visit ↗Checked Aug 30, 2026
Athena Pro
Distributor / manufacturer
Nutrient and amendment maker. We hold structured data on 3 of their products: analysis, elements, pH effect, and dosing. 1 are OMRI listed.
Run their actual products in our nutrient calculators before you buy a jug.
Visit ↗Checked Aug 30, 2026
Atlas Greenhouse
Distributor / manufacturer
The Georgia greenhouse manufacturer, forty years on: affordable freestanding and gutter-connect houses with Southern-style ventilation.
The Southeast's value manufacturer, built for heat.
Visit ↗Checked Aug 30, 2026
ATTRA / NCAT
Organization
The USDA-funded sustainable agriculture information service: hundreds of practical publications, a national farm internship board, and a hotline with a human on it (1-800-346-9140).
The single best free reference shelf in sustainable agriculture, plus someone to call.
Visit ↗Checked Aug 30, 2026
ATTRA Internship Board
Organization
The national sustainable-farm internship and apprenticeship listing service.
Find on-farm training, or post your farm and find help that wants to learn.
Visit ↗Checked Aug 30, 2026
b-parasite
Hardware
An open-hardware soil moisture and temperature sensor that speaks Bluetooth and Zigbee straight to Home Assistant; order the board, flash it, done.
A soil sensor you can actually trust and repair, for less than the disposable ones.
Visit ↗Checked Aug 30, 2026
Baker Creek Heirloom Seeds
Distributor / manufacturer
The family heirloom specialist in Missouri with the deepest rare-variety list in the country and a legendary free catalog.
The niche crops nobody else carries, if you are hunting something unusual.
Visit ↗Checked Aug 30, 2026
Bartlett Instrument
Distributor / manufacturer
The Iowa family controls maker, seventy-five years on: genuinely affordable greenhouse controllers sized for small growers. Also famous, oddly, for kiln controllers. Phone orders at present.
A real greenhouse controller without the commercial-scale price.
Visit ↗Checked Aug 30, 2026
BCS America
Distributor / manufacturer
The US importer of Italian BCS two-wheel tractors: one power unit that runs a tiller, flail, rotary plow, and snowblower, sold through dealers.
The backbone machine of farms under three acres.
Visit ↗Checked Aug 30, 2026
BeardedTinker
Publication / media
The one established maker channel running a sustained Home Assistant automate-my-land arc in 2026: vineyard, rain tanks, watering.
Watch HA meet actual land, weekly.
Visit ↗Checked Aug 30, 2026
Berry Hill Irrigation
Distributor / manufacturer
The family Virginia irrigation supplier, thirty-five years on: drip, plastic mulch, and a human on the phone at 1-800-345-DRIP.
Call and talk to someone who has actually grown under plastic.
Visit ↗Checked Aug 30, 2026
BFG Supply
Distributor / manufacturer
The major Ohio horticultural distributor; small growers usually touch BFG through its retail arm, Greenhouse Megastore.
Wholesale supply across the Midwest and East, dealer-style.
Visit ↗Checked Aug 30, 2026
BPIA (Biological Products Industry Alliance)
Organization
The trade association for biopesticide and biostimulant makers, with educational webinars on how biologicals actually work. Industry perspective.
Track the biologicals category as it grows up.
Visit ↗Checked Aug 30, 2026
BrAPI (Breeding API)
Standard
The community REST standard for plant breeding and phenotyping data, adopted by a hundred-plus institutions: a model of how an open ag API should be governed.
If you touch variety-trial data, this is its lingua franca.
Visit ↗Checked Aug 30, 2026
Bruce Bugbee / Apogee Instruments channel
Publication / media
Measurement science for growers: PAR, soil moisture, and Bugbee's lighting lectures, rigorous and active.
University-grade instruction on measuring light and water, free from an instrument maker.
Visit ↗Checked Aug 30, 2026
Bugwood Image Database
Dataset
Three hundred thousand curated, identification-verified photos of pests, diseases, and weeds.
Compare your mystery damage against verified reference photos.
Visit ↗Checked Aug 30, 2026
BWI Companies
Distributor / manufacturer
The Texas wholesale distributor, twenty branches, behind many Southern farm stores; wholesale accounts only.
The supply chain your local farm store probably rides on.
Visit ↗Checked Aug 30, 2026
Calculators: Air, climate & CO2 (11)
Software tool
11 free tools for air, climate & co2, including Air Exchange Rate Calculator (ACH), Climate Zone Classifier, CO₂ Enrichment Calculator.
Pick the tool shaped like your question and run it in the browser.
Visit ↗Checked Aug 30, 2026
Calculators: Bees & pollinators (7)
Software tool
7 free tools for bees & pollinators, including Apiary Site Survey, Bee Disease & Pest Reference, Bee Forage Selector.
Pick the tool shaped like your question and run it in the browser.
Visit ↗Checked Aug 30, 2026
Calculators: Business, energy & compliance (7)
Software tool
7 free tools for business, energy & compliance, including Cultivation Carbon Footprint Estimator, Compliance Readiness Checker, Cycle Cost-of-Goods-Sold Calculator.
Pick the tool shaped like your question and run it in the browser.
Visit ↗Checked Aug 30, 2026
Calculators: Crops & cultivars (5)
Software tool
5 free tools for crops & cultivars, including Crop Risk Assessment, Cultivar Browser, Disease Resistance Lookup.
Pick the tool shaped like your question and run it in the browser.
Visit ↗Checked Aug 30, 2026
Calculators: Field, beds & planting (14)
Software tool
14 free tools for field, beds & planting, including Companion Planting Reference, Cover Crop Selector, Field Border / Hedgerow Designer.
Pick the tool shaped like your question and run it in the browser.
Visit ↗Checked Aug 30, 2026
Calculators: Light & photoperiod (13)
Software tool
13 free tools for light & photoperiod, including Cost-per-DLI Calculator, Daylight Calculator, Day/Night DIF Designer.
Pick the tool shaped like your question and run it in the browser.
Visit ↗Checked Aug 30, 2026
Calculators: Livestock & pasture (9)
Software tool
9 free tools for livestock & pasture, including Animal Birth & Hatch Calendar, Brooder & Hatchery Calculator, Egg Production Estimator.
Pick the tool shaped like your question and run it in the browser.
Visit ↗Checked Aug 30, 2026
Calculators: Mushrooms & aquaculture (5)
Software tool
5 free tools for mushrooms & aquaculture, including Aquaculture Tank Calculator, Aquaponic Stocking Density Calculator, Mushroom Grain Spawn Recipe Calculator.
Pick the tool shaped like your question and run it in the browser.
Visit ↗Checked Aug 30, 2026
Calculators: Plant health & IPM (4)
Software tool
4 free tools for plant health & ipm, including IPM Beneficial Insect Selector, Pathogen Pressure Forecast, Pest & Disease Identification Guide.
Pick the tool shaped like your question and run it in the browser.
Visit ↗Checked Aug 30, 2026
Calculators: Post-harvest (3)
Software tool
3 free tools for post-harvest, including Drying & Curing Schedule Designer, Drying & Curing Yield Loss Calculator, Winter Storage Calculator.
Pick the tool shaped like your question and run it in the browser.
Visit ↗Checked Aug 30, 2026
Calculators: Sensors & monitoring (3)
Software tool
3 free tools for sensors & monitoring, including Camera Resolution Calculator, Hardware Build Configs, Sensor Comparison.
Pick the tool shaped like your question and run it in the browser.
Visit ↗Checked Aug 30, 2026
Calculators: Specialty crops (6)
Software tool
6 free tools for specialty crops, including Cut Flower Production Math, Hop Trellis Planner, Maple Syrup Production Estimator.
Pick the tool shaped like your question and run it in the browser.
Visit ↗Checked Aug 30, 2026
Calculators: Structures, greenhouse & energy (21)
Software tool
21 free tools for structures, greenhouse & energy, including Battery Bank Sizing Calculator, Grow Room Capacity Calculator, Composting Toilet & Humanure Designer.
Pick the tool shaped like your question and run it in the browser.
Visit ↗Checked Aug 30, 2026
Calculators: Substrate & soil (12)
Software tool
12 free tools for substrate & soil, including Soil Amendment Calculator, Compost C, Compost Pile Sizing Calculator.
Pick the tool shaped like your question and run it in the browser.
Visit ↗Checked Aug 30, 2026
Calculators: Uncategorized (1)
Software tool
1 free tools for uncategorized, including tier-assessment.
Pick the tool shaped like your question and run it in the browser.
Visit ↗Checked Aug 30, 2026
Calculators: Water, nutrients & feed (13)
Software tool
13 free tools for water, nutrients & feed, including Brix Refractometer Guide, Tank-Mix Compatibility Checker, Compound Lookup.
Pick the tool shaped like your question and run it in the browser.
Visit ↗Checked Aug 30, 2026
California DPR product database
Dataset
California's pesticide product database, the most extensively documented state system in the country, updated weekly.
California growers verify registration here; everyone else uses it as the deepest free product research tool.
Visit ↗Checked Aug 30, 2026
California Lightworks
Distributor / manufacturer
Grow light maker. We hold verified fixture specs for 1 of their lights: PPF, efficacy, power, coverage, with provenance.
Compare their real fixture numbers in our lighting tools before you spend.
Visit ↗Checked Aug 30, 2026
Capital Press
Publication / media
The Western agriculture weekly covering Oregon, Washington, Idaho, and California.
The West's farm news of record.
Visit ↗Checked Aug 30, 2026
Cardinal Scale / Detecto
Distributor / manufacturer
- Active
- Paid
- Link unresponsive at last check
The family Missouri scale manufacturer: legal-for-trade market scales, sold through dealers.
The certified scale you need before the farmers-market inspector asks.
Visit ↗Checked Aug 30, 2026
CDMS Label Database
Dataset
Manufacturer-fed labels and safety data sheets, including supplemental labels. Same caveat as Greenbook: industry convenience, official label authoritative.
Fast PDFs for the spray-shed binder.
Visit ↗Checked Aug 30, 2026
CEA Alliance
Organization
The trade association of US vertical farms and high-tech greenhouse produce growers: best practices and food safety guidance for indoor produce.
The industry's own playbook for growing food indoors safely and at scale.
Visit ↗Checked Aug 30, 2026
CEAg World
Publication / media
Meister's controlled-environment agriculture desk, launched 2023, with the CEA Summit East each fall.
The dedicated CEA trade coverage as the sector matures.
Visit ↗Checked Aug 30, 2026
Center for Rural Affairs
Organization
Great Plains rural advocacy nonprofit with strong beginning-farmer programs: Land Link matching and lending guides.
Beginning-farmer policy help and a matchmaking service for land.
Visit ↗Checked Aug 30, 2026
CGIAR
Organization
The global network of fifteen agricultural research centers, with open-access crop research and the genebanks behind rice, maize, and potato.
The deepest open crop science on earth.
Visit ↗Checked Aug 30, 2026
Citrus Industry
Publication / media
The citrus growers' magazine, Florida-centered, free, with crop forecast coverage tied to the October USDA estimate.
Citrus production coverage without a paywall.
Visit ↗Checked Aug 30, 2026
Civil Eats
Publication / media
The nonprofit food-system newsroom: policy-aware reporting on farming and food, membership-supported.
The policy weather that eventually lands on your farm, reported early.
Visit ↗Checked Aug 30, 2026
CleanWateR3 greenhouse water resources
University program
The university alliance on greenhouse and nursery irrigation water: quality, treatment, recycling, and runoff.
Diagnose water-quality trouble in recirculating systems before it wrecks a crop.
Visit ↗Checked Aug 30, 2026
Climate Engine
Software tool
- Active
- Free
- Link unresponsive at last check
On-demand maps and charts of satellite and climate data for any polygon you draw, powered by Earth Engine, no coding.
Chart drought, NDVI, and precipitation history for your exact ground.
Visit ↗Checked Aug 30, 2026
Climate Smart Farming (Cornell)
Software tool
Cornell's suite of climate decision tools for Northeast farms: growing degree days, water deficit, freeze risk.
Run the water deficit calculator and know when to irrigate.
Visit ↗Checked Aug 30, 2026
Coast of Maine
Distributor / manufacturer
The Maine composter of marine residuals: lobster-and-kelp composts and organic potting soils at garden centers.
Distinctive marine-based amendments off the retail shelf.
Visit ↗Checked Aug 30, 2026
CoCoRaHS
Community
The volunteer precipitation observer network: join with a forty-dollar gauge and see hyperlocal rainfall maps your neighbors report.
Rainfall truth for your neighborhood, and a citizen-science community to join.
Visit ↗Checked Aug 30, 2026
Commodity Classic
Event
The row-crop grower associations' joint convention and trade show, each late winter, rotating southern cities.
Where commodity policy, agronomy education, and the big equipment all meet.
Visit ↗Checked Aug 30, 2026
Community Alliance with Family Farmers
Organization
California family-farm advocacy and technical assistance: climate-smart and food-safety guides that travel well beyond the state.
Small-farm technical help written for real small farms.
Visit ↗Checked Aug 30, 2026
Cooperative Extension (your county office)
University program
The crown jewel almost nobody surfaces: a public specialist attached to a land-grant university in nearly every US county, running soil tests, diagnosing pests, and teaching workshops.
The closest thing to a personal agronomist you can have, and your taxes already paid for it.
Visit ↗Checked Aug 30, 2026
Copernicus Browser
Dataset
ESA's free portal for Sentinel satellite imagery: ten meter resolution, roughly five-day revisit, with vegetation indexes built in.
NDVI of your own fields every few days, free, no GIS degree needed.
Visit ↗Checked Aug 30, 2026
Cornell CASH soil health test
Reference work
The standard comprehensive soil health assessment, biological and physical indicators included, with a free interpretation manual.
A soil test that measures health, not just fertility, and the free manual to understand it.
Visit ↗Checked Aug 30, 2026
Cornell CEA Program
University program
The leading university controlled-environment agriculture group: free hydroponic crop handbooks for lettuce and spinach, lighting and energy tools.
The free handbooks commercial hydro lettuce growers actually use.
Visit ↗Checked Aug 30, 2026
Cornell Small Farms Program
University program
Guides, structured online courses, and the Small Farms Quarterly from Cornell's small-farm team.
A real beginning-farmer curriculum, some free, courses modestly priced.
Visit ↗Checked Aug 30, 2026
Cornell Vegetable Varieties for Gardeners
Dataset
The citizen-science database of vegetable variety ratings: taste, yield, and ease from real gardens.
Check the ratings before betting a season on an unknown variety.
Visit ↗Checked Aug 30, 2026
Cornell Vegetables (commercial)
Reference work
Commercial variety trial results, planting dates, and disease-resistance tables.
The disease-resistant variety list for each crop, before you order seed.
Visit ↗Checked Aug 30, 2026
Crop Ontology
Standard
Community-curated trait ontologies for thirty-seven crop species, used by the world's breeding platforms.
Standard trait names if you record crop observations seriously.
Visit ↗Checked Aug 30, 2026
CropKing
Distributor / manufacturer
The Ohio hydroponic greenhouse package manufacturer since 1982, with the classic two-day Grower School as the industry's on-ramp.
A complete greenhouse-plus-hydro package and the school that teaches you to run it.
Visit ↗Checked Aug 30, 2026
CropLife America
Organization
The trade association of pesticide manufacturers: the industry's advocacy and communications arm. Listed here as the industry perspective, not a neutral safety reference.
What the manufacturers are advocating, from the source.
Visit ↗Checked Aug 30, 2026
CSA Innovation Network
Community
The national community strengthening the CSA movement: best practices, marketing materials, and a peer network.
How the best CSAs run theirs, shared freely.
Visit ↗Checked Aug 30, 2026
Cultivate
Event
The horticulture industry's biggest annual show, each July in Columbus: production, retail, and the Medal of Excellence announcements.
The whole greenhouse trade in one building, once a year.
Visit ↗Checked Aug 30, 2026
Cutting Edge Solutions
Distributor / manufacturer
Nutrient and amendment maker. We hold structured data on 9 of their products: analysis, elements, pH effect, and dosing.
Run their actual products in our nutrient calculators before you buy a jug.
Visit ↗Checked Aug 30, 2026
Cyco
Distributor / manufacturer
Nutrient and amendment maker. We hold structured data on 3 of their products: analysis, elements, pH effect, and dosing.
Run their actual products in our nutrient calculators before you buy a jug.
Visit ↗Checked Aug 30, 2026
Dairy Grazing Apprenticeship
Organization
- Active
- Free
- Link unresponsive at last check
The first formal Department of Labor registered farming apprenticeship in the country: a paid two-year path to managing a grazing dairy.
A real trade apprenticeship, in dairy grazing, with a paycheck.
Visit ↗Checked Aug 30, 2026
data.gov agriculture
Dataset
The federal open-data catalog's agriculture group: thousands of datasets, one search, with a CKAN API.
If a federal agency published it, it is findable here.
Visit ↗Checked Aug 30, 2026
Davis Instruments
Distributor / manufacturer
The weather station maker, an AEM brand since 2021, whose Vantage Pro2 is the small-farm weather standard.
The farm weather station everyone recommends first.
Visit ↗Checked Aug 30, 2026
Down to Earth
Distributor / manufacturer
Nutrient and amendment maker. We hold structured data on 21 of their products: analysis, elements, pH effect, and dosing. 17 are OMRI listed.
Run their actual products in our nutrient calculators before you buy a jug.
Visit ↗Checked Aug 30, 2026
Drip Depot
Distributor / manufacturer
The family-owned Oregon online drip retailer with obsessively good how-to support and small-order friendliness.
Fittings by the each, and an academy that teaches you to plumb them.
Visit ↗Checked Aug 30, 2026
DripWorks
Distributor / manufacturer
The California drip irrigation retailer, thirty years in: kits, tape, timers, and free personalized system design.
Send them your garden map and get a drip design back, free. The gentlest first-system on-ramp.
Visit ↗Checked Aug 30, 2026
Dyna-Gro
Distributor / manufacturer
Nutrient and amendment maker. We hold structured data on 3 of their products: analysis, elements, pH effect, and dosing. 1 are OMRI listed.
Run their actual products in our nutrient calculators before you buy a jug.
Visit ↗Checked Aug 30, 2026
e-GRO
University program
The greenhouse collaborative's real-time alerts, nutritional and disease diagnostic guides, and grower apps.
Research-based alerts written for enclosed production, in season.
Visit ↗Checked Aug 30, 2026
Earth Tools
Distributor / manufacturer
The largest walk-behind tractor dealership in North America, a Kentucky family business: BCS and Grillo tractors, forty-five implement types, and encyclopedic phone support.
The de facto manual on walk-behind tractors, and a human who has run every implement.
Visit ↗Checked Aug 30, 2026
EcoFarm Conference
Event
The West Coast's ecological farming gathering, each January at Pacific Grove, California, running since 1981.
The West's organic winter meeting, ocean included.
Visit ↗Checked Aug 30, 2026
EDDMapS
Dataset
The early detection and mapping system for invasive species: see what is confirmed in your county and report sightings.
Which invasives have reached your county, mapped.
Visit ↗Checked Aug 30, 2026
eOrganic
University program
The national online organic agriculture community of practice: peer-reviewed articles, a webinar archive, and a video library.
University-vetted organic answers, the counterpart to ATTRA.
Visit ↗Checked Aug 30, 2026
EPA Bulletins Live! Two
Dataset
EPA's map of geographically specific, legally enforceable pesticide use limitations for endangered species. When a label says check Bulletins Live, the bulletin is part of the label.
The enforceable local restrictions for your county and month, increasingly referenced since 2024.
Visit ↗Checked Aug 30, 2026
EPA minimum risk pesticides (25(b))
Reference work
Why that cedar-oil product has no EPA number: the exempt minimum-risk class, explained, with the allowed ingredient lists. Most states still require state registration of these.
Sanity-check the natural products before you rely on them.
Visit ↗Checked Aug 30, 2026
EPA pesticide discharge permitting tool
Software tool
The interactive answer to whether your pesticide use needs a Clean Water Act permit. For normal field application, it does not; ponds and ditches change things.
Peace of mind, or fair warning, in ten minutes of clicking.
Visit ↗Checked Aug 30, 2026
EPA Worker Protection Standard manual
Reference work
The plain-language federal manual for the Worker Protection Standard, explicitly covering greenhouses and mushroom houses, with the owner-and-immediate-family exemption spelled out.
Figure out which duties actually apply to your operation; many homesteads are exempt.
Visit ↗Checked Aug 30, 2026
ePackageSupply
Distributor / manufacturer
The veteran-owned Indiana food-grade container retailer with no minimums on stock items.
Buckets and deli cups by the each, not the case.
Visit ↗Checked Aug 30, 2026
EPPO codes
Standard
The five-letter codes for plants, pests, and pathogens used in labels, spray records, and machine data everywhere.
The universal species shorthand, free to look up.
Visit ↗Checked Aug 30, 2026
EQIP (NRCS cost-share)
Funding program
The Environmental Quality Incentives Program: cost-share for conservation practices including high tunnels, irrigation efficiency, and cover crops. Your NRCS field office is the front door.
The program that has paid for thousands of small growers' first high tunnel.
Visit ↗Checked Aug 30, 2026
ESPHome
Software tool
Firmware for ESP32 boards written as configuration, not code: describe your sensors in YAML and flash from the browser. Ships monthly.
The gentlest path from a bare board to a working sensor node.
Visit ↗Checked Aug 30, 2026
Experimental Farm Network
Community
A volunteer participatory plant-breeding network: join real breeding projects from a backyard plot.
A seat in actual crop breeding, no degree required.
Visit ↗Checked Aug 30, 2026
Extension Foundation (extension.org)
University program
The national gateway into the whole Cooperative Extension system from one door.
Route into any state's land-grant resources without knowing the campus.
Visit ↗Checked Aug 30, 2026
Extension Master Gardener programs
University program
Volunteer horticulture training run by the land-grant in every state: coursework, then service hours answering the public's plant questions.
Real training and a community, or free expert answers from those who took it.
Visit ↗Checked Aug 30, 2026
Fablabs.io
Maker space
The Fab Foundation's official registry of fab labs worldwide, with each lab's machines and whether it is actually open. Over 300 labs in the US alone.
Find a lab with the 3D printer, laser cutter, or CNC you need once, and see its equipment list before you drive.
Visit ↗Checked Aug 30, 2026
FAO
Organization
The UN's food and agriculture agency: FAOSTAT data for every country, crop production guides, and the canonical irrigation references.
The global picture, and reference works like FAO-56 that the whole field builds on.
Visit ↗Checked Aug 30, 2026
FAO-56 Crop Evapotranspiration
Reference work
The canonical irrigation reference, free in full: Penman-Monteith reference evapotranspiration and the crop coefficients everything else builds on.
The Kc for your crop and the math behind every smart irrigation tool, from the source.
Visit ↗Checked Aug 30, 2026
FAOSTAT
Data / API
FAO's global food and agriculture statistics for two hundred forty-five countries, with an API.
The world picture on any crop, for market context.
Visit ↗Checked Aug 30, 2026
Farm Aid
Organization
The farmer-support nonprofit behind the concert: a crisis hotline (1-800-FARM-AID) and a farmer resource network.
A number to call when things get hard, and people who have helped farmers through it since 1985.
Visit ↗Checked Aug 30, 2026
Farm Credit
Organization
The nationwide network of borrower-owned agricultural lenders, chartered a century ago for exactly this.
Ag-literate lending when you outgrow the microloan.
Visit ↗Checked Aug 30, 2026
Farm Hack
Community
The farmer-driven open tool library: three hundred documented tool designs and the culture of farmers publishing what they build.
Plans for tools other farmers already proved, and a place to publish yours.
Visit ↗Checked Aug 30, 2026
Farm Hack Open Shops
Maker space
Real farm shops that open their doors, indexed by skill: welding, CNC, 3D printing, Arduino programming, machining, carpentry.
The makerspace idea in farm clothes. Find a farmer nearby with the shop and the skill you need, taught in your own vocabulary.
Visit ↗Checked Aug 30, 2026
Farm Progress Show
Event
The country's biggest outdoor farm show, late summer, alternating between Boone, Iowa and Decatur, Illinois, with live field demonstrations.
Equipment working in an actual field, not on carpet.
Visit ↗Checked Aug 30, 2026
farm-ng Amiga
Hardware
A modular electric farm rover with an open SDK, the platform behind the collegiate Farm Robotics Challenge. The hardware is commercial; the development surface is open.
A real rover you can program without signing an NDA.
Visit ↗Checked Aug 30, 2026
FarmBot
Hardware
The open-source CNC garden robot that seeds, waters, and weeds raised beds; hardware plans and software all free, used by five hundred schools.
A garden that tends itself, or the best robotics teaching platform agriculture has.
Visit ↗Checked Aug 30, 2026
FarmData2
Software tool
Data entry and reporting for diversified vegetable farms, built on farmOS, aligned with organic certification records, and sustained by a college course.
Certification-shaped record keeping, free, from people teaching the next generation to maintain it.
Visit ↗Checked Aug 30, 2026
Farmer Veteran Coalition
Organization
The nonprofit helping military veterans enter agriculture: a fellowship fund for equipment grants and the Homegrown by Heroes label.
If you served, a community and small equipment grants to get you farming.
Visit ↗Checked Aug 30, 2026
Farmers Friend
Distributor / manufacturer
The farm-born Tennessee maker of Caterpillar Tunnels, the Quick-Cut Greens Harvester, and Jang seeders, tested on their own ground.
The market-garden equipment name of the last decade, with real education behind the products.
Visit ↗Checked Aug 30, 2026
Farmers Market Coalition
Organization
The national nonprofit supporting farmers markets: manager toolkits, SNAP and EBT guidance, and metrics tools.
Everything a market vendor or market manager needs to run the thing right.
Visit ↗Checked Aug 30, 2026
farmOS
Software tool
The open farm record-keeping platform, twelve years of steady releases, whose data model has become a de facto open standard others build on.
Farm records you own outright, on software nobody can take away or subscription-trap you with.
Visit ↗Checked Aug 30, 2026
FarmTek / GrowSpan / ClearSpan
Distributor / manufacturer
One company, several brand names: FarmTek the catalog, GrowSpan the greenhouses, ClearSpan the big fabric buildings, plus hydroponic fodder systems. Not the same company as ShelterLogic.
Hoop barns to fodder racks in one catalog, once you decode the brand family.
Visit ↗Checked Aug 30, 2026
FarmVibes.AI
Software tool
Microsoft Research's open geospatial and ag model toolkit: serious satellite and weather fusion workflows, freely licensed.
Big-company research tooling, open on the shelf for anyone technical enough to lift it.
Visit ↗Checked Aug 30, 2026
FDA FSMA raw manure rules
Reference work
The federal food-safety rules for biological soil amendments, with the manure application-to-harvest intervals.
Know the ninety and one-twenty day manure intervals, and whether your farm is even covered; many small farms are exempt.
Visit ↗Checked Aug 30, 2026
Fedco Seeds
Distributor / manufacturer
The Maine consumer and worker co-op: cheap, honest, cold-climate-proven seed, trees, and organic supplies, in a newsprint catalog with opinions. Seasonal ordering windows; plan ahead.
The best seed value in the Northeast, from a co-op that answers to its members.
Visit ↗Checked Aug 30, 2026
fiboa field boundaries
Standard
The young open schema for field-boundary data, GeoJSON and GeoParquet flavored, from the open geospatial community.
An open way to describe where your fields are that no vendor owns.
Visit ↗Checked Aug 30, 2026
Fields2Cover
Software tool
The open coverage-path-planning library for farm vehicles: how a robot decides to drive a field.
A standard building block if you are pointing anything autonomous at a paddock.
Visit ↗Checked Aug 30, 2026
FieldWatch (DriftWatch and BeeCheck)
Dataset
The national map registry of specialty crop fields and apiaries that commercial spray applicators check before they spray, covering about twenty-seven states.
Register your farm and hives so the sprayer sees you first. The highest-leverage free action near row-crop country.
Visit ↗Checked Aug 30, 2026
FieldWatch registration
Organization
The registration side of the FieldWatch map: put your specialty crops on DriftWatch and your hives on BeeCheck so applicators see you before they spray.
The single highest-leverage free protective action for a small grower near row-crop country.
Visit ↗Checked Aug 30, 2026
FIRA USA
Event
The agricultural robotics show, each fall in California: the machines that will weed for you, walking the rows.
Ag autonomy in person before you read about it.
Visit ↗Checked Aug 30, 2026
Florikan
Distributor / manufacturer
Nutrient and amendment maker. We hold structured data on 19 of their products: analysis, elements, pH effect, and dosing.
Run their actual products in our nutrient calculators before you buy a jug.
Visit ↗Checked Aug 30, 2026
Fluence
Distributor / manufacturer
Grow light maker. We hold verified fixture specs for 2 of their lights: PPF, efficacy, power, coverage, with provenance.
Compare their real fixture numbers in our lighting tools before you spend.
Visit ↗Checked Aug 30, 2026
Foundation for Food and Agriculture Research
Organization
The congressionally created nonprofit funding public-private agricultural research.
A window on where ag research money is flowing next.
Visit ↗Checked Aug 30, 2026
Fox Farm
Distributor / manufacturer
Nutrient and amendment maker. We hold structured data on 15 of their products: analysis, elements, pH effect, and dosing. 5 are OMRI listed.
Run their actual products in our nutrient calculators before you buy a jug.
Visit ↗Checked Aug 30, 2026
FreshPlaza and family
Publication / media
The free daily global fresh-produce trade wire, with sister dailies HortiDaily for greenhouse horticulture and VerticalFarmDaily for indoor.
The world's produce trade, free, every morning.
Visit ↗Checked Aug 30, 2026
FSA farm loans and microloans
Funding program
The Farm Service Agency lends where banks often will not: streamlined microloans for a market garden or first season, and beginning-farmer loans that lower the bar.
Capital designed for exactly the farm the banks call too small.
Visit ↗Checked Aug 30, 2026
GARDIAN
Dataset
The pan-CGIAR search engine over a hundred thousand publications and thousands of datasets from fifteen research centers.
Global crop research data, one search.
Visit ↗Checked Aug 30, 2026
Gavita
Distributor / manufacturer
Grow light maker. We hold verified fixture specs for 5 of their lights: PPF, efficacy, power, coverage, with provenance.
Compare their real fixture numbers in our lighting tools before you spend.
Visit ↗Checked Aug 30, 2026
Glacier Valley Enterprises
Distributor / manufacturer
The Wisconsin produce packaging and farm-market supplier: berry tills, clamshells, pulp trays, and market signage in farm-stand quantities. Their old dot-com domain is parked; this is the real one.
Packaging in the quantities a farm stand actually needs.
Visit ↗Checked Aug 30, 2026
GLASE Consortium
University program
The Cornell and RPI consortium on greenhouse lighting and controls, with an online course catalog and published research.
University-grade greenhouse lighting knowledge without enrolling.
Visit ↗Checked Aug 30, 2026
GOAT (Gathering for Open Agricultural Technology)
Community
The commons of open agricultural technology: a forum where the farmOS, OpenTEAM, and farm-hacker worlds meet, and a biennial gathering (next: December 2026, Seabrook Island, South Carolina).
The watering hole. If you build open tools for farms, these are your people.
Visit ↗Checked Aug 30, 2026
GOAT gathering
Event
The biennial unconference of open agricultural technology; next edition December 2026 at Seabrook Island, South Carolina.
Every open-ag builder in one room, every other year.
Visit ↗Checked Aug 30, 2026
Good Fruit Grower
Publication / media
The tree fruit and grape growers' magazine since 1946, association-owned, print sub gates the digital issues but much of the web is free.
The orchard trade's serious journalism, and a free weekly digest.
Visit ↗Checked Aug 30, 2026
GOSH (Gathering for Open Science Hardware)
Community
The global open science hardware community, the adjacent gene pool the open ag sensing world draws from.
Where scientific instruments get opened up, often years before farming notices.
Visit ↗Checked Aug 30, 2026
Gothic Arch Greenhouses
Distributor / manufacturer
One of the oldest names in hobby and small-commercial greenhouses, family-run in Mobile, Alabama since 1946, with design help across a huge range.
Somebody who has been selling greenhouses since before plastic film, helping you pick one.
Visit ↗Checked Aug 30, 2026
Grants.gov
Dataset
Every federal grant opportunity in one searchable place, with open data behind it. The agency field office is usually the better first call, but this is the master list.
The complete federal funding firehose, filterable.
Visit ↗Checked Aug 30, 2026
Grassfed Exchange
Event
The grassfed livestock conference and ranch tours, held around the country each year.
Graziers comparing notes, pasture walks included.
Visit ↗Checked Aug 30, 2026
Great Lakes EXPO
Event
The Midwest's big December show for vegetable, fruit, and farm-market growers in Grand Rapids.
The Midwest specialty-crop winter meeting, education tracks and all.
Visit ↗Checked Aug 30, 2026
Greenbook
Dataset
An industry-maintained label and safety-data-sheet database searchable by crop, pest, and active ingredient. Convenient, but the EPA and state label remain the authority.
Season planning: find what is labeled for aphids on lettuce, then verify against the official label.
Visit ↗Checked Aug 30, 2026
Greenhorns
Community
The grassroots cultural organization for young agrarians: the New Farmer's Almanac, a huge free resource list, and radio.
Culture and connection for the new-farmer movement, and one of the best link lists in agriculture.
Visit ↗Checked Aug 30, 2026
Greenhouse Grower
Publication / media
The trade magazine of commercial greenhouse growing, and publisher of the annual Top 100 Growers ranking, the most cited scale benchmark in the business.
Industry trends free, and every May the map of who is biggest.
Visit ↗Checked Aug 30, 2026
Greenhouse Megastore
Distributor / manufacturer
The retail-friendly online greenhouse supplier: polycarbonate, trays, shade cloth, and ground cover with no account required.
The just-sell-me-ten-trays counter, from hobby to small commercial.
Visit ↗Checked Aug 30, 2026
Greenhouse Product News
Publication / media
The monthly for commercial greenhouse growers, ornamental-leaning with CEA coverage.
Another free window on the greenhouse trade, and its young-talent list.
Visit ↗Checked Aug 30, 2026
GreenTech Amsterdam
Event
The global greenhouse-technology show, each June in Amsterdam, where controlled-environment equipment debuts first.
The Dutch greenhouse world, which is to say the future of yours.
Visit ↗Checked Aug 30, 2026
Griffin Greenhouse Supplies
Distributor / manufacturer
The family horticultural distributor since 1947, fifteen distribution centers, East-leaning: media, trays, fertilizer, structures, and IPM through a wholesale account.
The big pro house; the reps genuinely know growing.
Visit ↗Checked Aug 30, 2026
GRIN-Global germplasm system
Dataset
The US National Plant Germplasm System: six hundred thousand seed accessions, and yes, they will mail you samples of rare varieties for trial and breeding, free.
Request seed of landraces you cannot buy anywhere. Most growers have no idea this exists.
Visit ↗Checked Aug 30, 2026
Grow More
Distributor / manufacturer
Nutrient and amendment maker. We hold structured data on 27 of their products: analysis, elements, pH effect, and dosing.
Run their actual products in our nutrient calculators before you buy a jug.
Visit ↗Checked Aug 30, 2026
Grow Recipes (oat-recipe standard)
Standard
Machine-readable grow recipes: targets by crop and stage in an open format, with a public standard behind them.
Setpoints you can load, compare, and argue with, instead of folklore.
Visit ↗Checked Aug 30, 2026
Growers and Co.
Distributor / manufacturer
The Quebec tool and workwear brand allied with Jean-Martin Fortier's Market Gardener Institute: broadforks, harvest knives, and clothing built for the work.
The Market Gardener ecosystem's tools, in a catalog that doubles as inspiration.
Visit ↗Checked Aug 30, 2026
GrowerTalks
Publication / media
Ball Publishing's grower-culture magazine, with Chris Beytes' Acres Online, the best-written greenhouse newsletter going.
The greenhouse trade's voice, free, plus the wage survey everyone quotes.
Visit ↗Checked Aug 30, 2026
Growing for Market
Publication / media
The trade magazine for market farmers since 1992, ten issues a year: peer growers writing up their production and marketing in detail.
The magazine your exact peers write; worth the forty-five dollars if you sell what you grow.
Visit ↗Checked Aug 30, 2026
Growing Produce
Publication / media
The home of American Vegetable Grower and American Fruit Grower: trade coverage of commercial fruit and vegetable production.
The specialty-crop trade press, free, with the annual industry survey worth reading whole.
Visit ↗Checked Aug 30, 2026
GS1 fresh produce standards
Standard
The identification standards behind produce traceability: guidelines free to read, though issuing your own barcodes costs an annual prefix fee.
What the barcode-and-lot world will ask of you when you sell into retail.
Visit ↗Checked Aug 30, 2026
Harris Seeds
Distributor / manufacturer
The 1879 Rochester seed house that is also a legitimate small-scale supplies source: seed-starting gear, trays, and plugs with grower terms.
Seed and the stuff to start it, one order.
Visit ↗Checked Aug 30, 2026
Heliospectra
Distributor / manufacturer
Grow light maker. We hold verified fixture specs for 1 of their lights: PPF, efficacy, power, coverage, with provenance.
Compare their real fixture numbers in our lighting tools before you spend.
Visit ↗Checked Aug 30, 2026
Herb Society of America
Organization
The herb education society: growing guides and plant profiles.
Herb knowledge with history behind it.
Visit ↗Checked Aug 30, 2026
High Mowing Organic Seeds
Distributor / manufacturer
The hundred-percent certified-organic seed company in Vermont, strong on disease-resistance notes.
Organic-bred genetics at commercial volumes; the second catalog on every potting bench.
Visit ↗Checked Aug 30, 2026
Home Assistant
Software tool
The world's largest open home-automation platform, nonprofit-owned, and quietly the largest community on earth doing ESP32 environmental monitoring.
The place your sensors, irrigation, and greenhouse controls all come together, owned by you.
Visit ↗Checked Aug 30, 2026
Home Assistant plant monitoring (Olen's plant + flower card)
Software tool
The maintained plant-monitoring pair for Home Assistant: per-plant thresholds, a database of species targets, and the flower card to show it all.
Every plant's moisture, light, and warnings on one dashboard.
Visit ↗Checked Aug 30, 2026
Hoocho
Publication / media
Weekly DIY hydroponics and 3D-printed grow hardware with open designs; the closest active YouTube peer to the open-hardware growing ethos.
Buildable hydro ideas every week, plans included.
Visit ↗Checked Aug 30, 2026
Hort Americas
Distributor / manufacturer
The CEA-specialist wholesale distributor: hydroponic substrates, LED lighting, and fertilizer aimed at greenhouse vegetables, with serious free education behind it.
A distributor that publishes real agronomy, not just a price list.
Visit ↗Checked Aug 30, 2026
Horticulture Lighting Group
Distributor / manufacturer
Grow light maker. We hold verified fixture specs for 2 of their lights: PPF, efficacy, power, coverage, with provenance.
Compare their real fixture numbers in our lighting tools before you spend.
Visit ↗Checked Aug 30, 2026
Hummert International
Distributor / manufacturer
The family Missouri horticultural distributor, about ninety years old, whose fat everything-catalog is a reference document in its own right.
Friendly to smaller accounts, and the catalog teaches you what exists.
Visit ↗Checked Aug 30, 2026
Husker Harvest Days
Event
The big irrigated-agriculture field show, each September at Grand Island, Nebraska.
Irrigation equipment demonstrated under real center pivots.
Visit ↗Checked Aug 30, 2026
ICAR Animal Data Exchange
Standard
The open JSON standards for exchanging livestock data between farm systems, milking robots, and sensors; free on GitHub even though ICAR membership is paid.
The open path into livestock sensor data, no membership required.
Visit ↗Checked Aug 30, 2026
ICL
Distributor / manufacturer
- Active
- Paid
- Ours
- Link unresponsive at last check
Nutrient and amendment maker. We hold structured data on 40 of their products: analysis, elements, pH effect, and dosing.
Run their actual products in our nutrient calculators before you buy a jug.
Visit ↗Checked Aug 30, 2026
IFOAM Organics International
Organization
The global umbrella for the organic movement: principles and world organic statistics.
Organic as a worldwide movement, with the numbers to show it.
Visit ↗Checked Aug 30, 2026
IFPA Global Produce and Floral Show
Event
The produce industry's giant October trade show, where retail buyers and growers of every size meet.
The buying side of your industry, all in one hall.
Visit ↗Checked Aug 30, 2026
iGrow News
Publication / media
Daily CEA and agtech coverage with a Friday digest; not the old SDSU iGrow, and not Link4's iGrow controllers.
Deal flow and sector news for indoor growing.
Visit ↗Checked Aug 30, 2026
iNaturalist
Community
The global crowdsourced species identification platform, computer vision plus experts, with an open API.
Snap any unknown insect or weed and get an identification.
Visit ↗Checked Aug 30, 2026
Indoor Ag-Con
Event
The indoor and vertical farming trade show, spring in Las Vegas.
The CEA industry's annual gathering.
Visit ↗Checked Aug 30, 2026
IR-4 Project
University program
The federal and land-grant program that gets pest controls registered on specialty crops; responsible for about half of all specialty crop registrations, and it takes requests from growers.
When nothing is labeled for your crop and pest, IR-4 exists to fix exactly that. File a Project Clearance Request.
Visit ↗Checked Aug 30, 2026
Irrigation King
Distributor / manufacturer
The online irrigation discounter: budget drip tape, rain guns, and filters, house-brand heavy.
Consumables at the lowest prices when you know what you need.
Visit ↗Checked Aug 30, 2026
Irrigation Unlimited
Software tool
The power-user irrigation scheduler for Home Assistant: seasons, sequences, and every edge case, actively maintained.
Irrigation scheduling with no ceiling on complexity when your system outgrows the simple ones.
Visit ↗Checked Aug 30, 2026
ISOBUS and the AEF
Standard
The backbone standard of ag equipment: how tractors, implements, and software talk. The AEF's public compatibility database shows what actually interoperates; the ISO texts themselves are paywalled.
Check whether two pieces of equipment really work together before buying either.
Visit ↗Checked Aug 30, 2026
Jack's Elementals
Distributor / manufacturer
Nutrient and amendment maker. We hold structured data on 13 of their products: analysis, elements, pH effect, and dosing. 3 are OMRI listed.
Run their actual products in our nutrient calculators before you buy a jug.
Visit ↗Checked Aug 30, 2026
Jacks Professional
Distributor / manufacturer
Nutrient and amendment maker. We hold structured data on 18 of their products: analysis, elements, pH effect, and dosing.
Run their actual products in our nutrient calculators before you buy a jug.
Visit ↗Checked Aug 30, 2026
Johnny's Grower's Library
Reference work
The research-team-written crop guides, planning calculators, and tech sheets behind the Johnny's catalog: the single best vendor education asset in the sector.
Succession calculators and key-growing sheets you will use every season, free.
Visit ↗Checked Aug 30, 2026
Johnny's Selected Seeds
Distributor / manufacturer
The employee-owned seed and tool house in Winslow, Maine: trialed varieties with the best cultural information in print, commercial volumes, and a free Grower's Library of calculators and charts.
The reference catalog of specialty growing; the free Grower's Library alone earns the bookmark.
Visit ↗Checked Aug 30, 2026
JR Peters
Distributor / manufacturer
Nutrient and amendment maker. We hold structured data on 32 of their products: analysis, elements, pH effect, and dosing.
Run their actual products in our nutrient calculators before you buy a jug.
Visit ↗Checked Aug 30, 2026
Kelly Registration Systems
Dataset
- Active
- Free
- Link unresponsive at last check
The private company that hosts the official pesticide and fertilizer registration databases for around thirty-nine state agriculture departments. Official state data, commercial plumbing.
Your state's actual registration lookup, for most states.
Visit ↗Checked Aug 30, 2026
Kiss the Ground
Organization
The media nonprofit that made regenerative agriculture a household phrase: stewardship courses and storytelling resources.
The gentle on-ramp to regenerative thinking, good for explaining it to your customers too.
Visit ↗Checked Aug 30, 2026
Kiva US small-business loans
Funding program
Zero-percent, crowdfunded small-business loans up to fifteen thousand dollars, and farms qualify.
Interest-free starter capital backed by people rooting for you.
Visit ↗Checked Aug 30, 2026
L'Atelier Paysan (the self-build workshop model)
Community
The French cooperative movement that proved farmers can weld their own implements: open plans plus hands-on build courses. The original cooperative reorganized in 2026; the network and the plans carry on.
Open, field-proven implement plans and the model for farmer-taught workshops. French language, universal idea.
Visit ↗Checked Aug 30, 2026
Lancaster Farming
Publication / media
The Pennsylvania and mid-Atlantic farm weekly with strong small-farm and produce-auction coverage.
The best regional farm paper in the East, auction prices included.
Visit ↗Checked Aug 30, 2026
Land For Good
Organization
The land-access nonprofit for farm seekers and retiring farmers, New England based, with planning tools used far beyond it.
Free land-access planning tools and advising for getting on, or passing on, a farm.
Visit ↗Checked Aug 30, 2026
Land-grant small farm programs (pattern)
Reference work
Most states run a small-farm or beginning-farmer program inside their land-grant; ATTRA keeps the directory of them.
Find your state's version of Cornell Small Farms in one list.
Visit ↗Checked Aug 30, 2026
Lebanon Turf
Distributor / manufacturer
Nutrient and amendment maker. We hold structured data on 4 of their products: analysis, elements, pH effect, and dosing.
Run their actual products in our nutrient calculators before you buy a jug.
Visit ↗Checked Aug 30, 2026
Ledgewood Farm greenhouse frames
Distributor / manufacturer
Farmer-built pipe-frame high tunnels from New Hampshire, made since 1987 by a man who grows in them.
An economical tunnel and a phone call with the farmer who bends the pipe.
Visit ↗Checked Aug 30, 2026
Link4 Controls
Distributor / manufacturer
The Anaheim greenhouse controller maker: iGrow and Pearl cloud-connected controllers with text alerts. Not the SDSU iGrow, not iGrow News.
The mid-priced modern controller between Bartlett and Wadsworth.
Visit ↗Checked Aug 30, 2026
LiteFarm
Software tool
Free farm planning and record software built with farmers by a university team, used on three thousand farms in over a hundred countries.
The easiest on-ramp to farm records for a small diversified operation.
Visit ↗Checked Aug 30, 2026
LocalHarvest
Dataset
The longest-running national directory of small farms, CSAs, and markets, beloved for decades.
A free farm listing that customers actually find.
Visit ↗Checked Aug 30, 2026
Make: Makerspace Directory
Maker space
One directory covering all three flavors of shared workshop: makerspaces, fab labs, and hackerspaces, with a map and state filters.
The widest what-is-near-me net, and the friendliest for a first-timer. Start here.
Visit ↗Checked Aug 30, 2026
Maker Faire
Event
The global network of maker festivals, from school-gym mini faires to the Bay Area flagship, with a map of upcoming faires.
One weekend at a faire introduces you to every maker and space in your region.
Visit ↗Checked Aug 30, 2026
Marbleseed
Organization
- Active
- Freemium
- Link unresponsive at last check
Midwest organic education nonprofit, formerly MOSES, running the largest organic farming conference in the country plus an Organic Answer Line.
Fact sheets, New Farmer U, and the big La Crosse conference every winter.
Visit ↗Checked Aug 30, 2026
Marbleseed Organic Farming Conference
Event
- Active
- Paid
- Link unresponsive at last check
The largest organic farming conference in the country, late February in La Crosse, Wisconsin.
The organic movement's family reunion, workshops included.
Visit ↗Checked Aug 30, 2026
Market Gardener Institute
Publication / media
Jean-Martin Fortier's channel and school: farm business case studies and greenhouse economics from the Market Gardener author.
The economics of small farming, taught by its most famous practitioner.
Visit ↗Checked Aug 30, 2026
Mars Hydro
Distributor / manufacturer
Grow light maker. We hold verified fixture specs for 2 of their lights: PPF, efficacy, power, coverage, with provenance.
Compare their real fixture numbers in our lighting tools before you spend.
Visit ↗Checked Aug 30, 2026
Mid-Atlantic Fruit and Vegetable Convention
Event
The Hershey, Pennsylvania winter convention, each late January, anchoring the mid-Atlantic grower calendar.
Three days of production sessions with the region's extension specialists in one hotel.
Visit ↗Checked Aug 30, 2026
Midwest Vegetable Production Guide
Reference work
The annually updated multi-state commercial vegetable guide: what is labeled and recommended this year, crop by crop. Every region has an equivalent; this one and the Southeastern handbook are free online.
The current year's spray and variety book, free, updated every winter.
Visit ↗Checked Aug 30, 2026
Modern Farmer
Publication / media
Food-and-farming features for a general audience, now owned by Epic Gardening rather than the old nonprofit foundation.
Readable farm storytelling; know it is a commercial magazine now.
Visit ↗Checked Aug 30, 2026
Modus lab data standard
Standard
The standard terminology and formats for soil, manure, and tissue lab test data; version two shipped in 2025 and the open farm-tech world builds on it.
Soil tests that mean the same thing across labs and software.
Visit ↗Checked Aug 30, 2026
Monnit
Distributor / manufacturer
The Salt Lake wireless sensor manufacturer: affordable temperature, humidity, and water sensors with cloud alerting.
Commercial-grade sensors for barns and coolers when DIY is not the mood.
Visit ↗Checked Aug 30, 2026
Monte Package Company
Distributor / manufacturer
The family produce packaging house since 1925, in Michigan's fruit belt: clamshells, corrugated, and grab-and-go bags.
A century of packaging fruit, farm-market friendly.
Visit ↗Checked Aug 30, 2026
MudPi
Software tool
A configurable smart-garden framework for Raspberry Pi and ESP32: sensors, relays, and automations from a YAML file.
Garden automation glue that reads like a config file, not a program.
Visit ↗Checked Aug 30, 2026
Mycodo
Software tool
Raspberry Pi environmental monitoring and regulation with real PID control: greenhouse, mushroom, and hydroponic automation, relentlessly maintained for a decade.
Closed-loop climate control you own completely, on a fifty-dollar computer.
Visit ↗Checked Aug 30, 2026
NASA FIRMS fire information
Data / API
Fire detection from satellites in near real time, free with a key.
Active-fire alerts for your area, from orbit.
Visit ↗Checked Aug 30, 2026
NASA POWER
Data / API
NASA's agroclimatology data service: solar radiation, temperature, and humidity for any point on earth, with a clean REST API.
Solar data for greenhouse siting or panel sizing, anywhere, free.
Visit ↗Checked Aug 30, 2026
Nation of Makers
Organization
The US nonprofit trade association for maker organizations, with a find-a-maker-organization tool and guides for starting a makerspace.
A US-focused door to maker organizations, and the people to call if your county wants a space of its own.
Visit ↗Checked Aug 30, 2026
National Agricultural Library
Reference work
One of the largest agricultural libraries in the world, with free topic guides on CSA, specialty crops, and organic.
The nation's ag bookshelf, open to everyone.
Visit ↗Checked Aug 30, 2026
National Farm Machinery Show
Event
The February Louisville machinery show, indoors, with the tractor pull.
The equipment winter pilgrimage east of the Mississippi.
Visit ↗Checked Aug 30, 2026
National Farm to School Network
Organization
The network connecting local farms with school cafeterias, with procurement guides for both sides.
A steady institutional sales channel and the paperwork map to reach it.
Visit ↗Checked Aug 30, 2026
National Farmers Union
Organization
The general farm organization advocating for family farms since 1902, with co-op education and a beginning farmer institute.
A policy voice for the family-scale farm and training to go with it.
Visit ↗Checked Aug 30, 2026
National FFA Convention and Expo
Event
The largest annual gathering of agricultural students in the country, each fall in Indianapolis.
Where the next generation of your industry shows up sixty thousand strong.
Visit ↗Checked Aug 30, 2026
National Grange
Organization
The oldest US agricultural fraternal organization, founded 1867, with halls in seventeen hundred towns.
A rural community institution that may already have a hall near you.
Visit ↗Checked Aug 30, 2026
National Greenhouse Manufacturers Association
Organization
The trade association of greenhouse manufacturers: structural standards and buying guidance for greenhouse construction.
The standards your greenhouse frame should meet, from the people who build them.
Visit ↗Checked Aug 30, 2026
National Plant Diagnostic Network
Organization
The lab network behind the land-grant plant clinics: a real diagnostic lab in every state.
Mail a sample, get a definitive disease identification, usually for a token fee.
Visit ↗Checked Aug 30, 2026
National Urban Agriculture Initiative
University program
The Virginia State led USDA project equipping urban growers to actually use USDA services.
How to walk into an FSA or NRCS office as a city grower and come out with help.
Visit ↗Checked Aug 30, 2026
National Weather Service API
Data / API
The National Weather Service's free forecast and alerts API, no key required.
Official forecasts and frost warnings wired straight into your own dashboard or automation.
Visit ↗Checked Aug 30, 2026
National Young Farmers Coalition
Organization
The grassroots policy network for the next generation of farmers: land access advocacy, local chapters, and guides to credit and land.
The organized voice of beginning farmers, plus practical land and loan guides.
Visit ↗Checked Aug 30, 2026
Native Seeds/SEARCH
Organization
Southwest-focused seed conservation: arid-adapted crop varieties and seed-saving education.
Crops that already know how to handle heat and drought.
Visit ↗Checked Aug 30, 2026
NCERA-101 Controlled Environments Committee
University program
The multi-university committee on controlled environment technology: the measurement and reporting guidelines researchers themselves use.
How the scientists measure growth chambers, free to copy.
Visit ↗Checked Aug 30, 2026
Nectar for the Gods
Distributor / manufacturer
Nutrient and amendment maker. We hold structured data on 4 of their products: analysis, elements, pH effect, and dosing.
Run their actual products in our nutrient calculators before you buy a jug.
Visit ↗Checked Aug 30, 2026
Netafim
Distributor / manufacturer
The Israeli-born inventor of modern drip irrigation, now part of Orbia: the industry-standard driplines and emitters, sold through dealers.
The reference drip hardware; buy it through the retailers above.
Visit ↗Checked Aug 30, 2026
NeverDry
Software tool
A new scientific water-balance irrigation integration for Home Assistant, releasing weekly since spring 2026.
The newest thinking in water-balance irrigation, free and moving fast.
Visit ↗Checked Aug 30, 2026
Neversink Tools
Distributor / manufacturer
Farmer-designed precision no-till tools, proven on one of the highest revenue-per-acre farms in the country, with a deep free video library.
Tools that earned their shape on a working farm, and the videos showing exactly how.
Visit ↗Checked Aug 30, 2026
New England Vegetable and Fruit Conference
Event
The biennial December conference at Manchester, New Hampshire, built by the region's extension services.
New England's every-other-year deep dive, extension-taught.
Visit ↗Checked Aug 30, 2026
New England Vegetable Management Guide
Reference work
The multi-university commercial production guide for New England, fully online and kept current.
Crop-by-crop commercial recommendations for the Northeast, free.
Visit ↗Checked Aug 30, 2026
NEWA
Software tool
The Network for Environment and Weather Applications: seven hundred on-farm stations across twenty states driving forty-plus disease and insect forecast tools.
Research-grade apple scab, fire blight, and late blight risk forecasts from a station near your farm, free.
Visit ↗Checked Aug 30, 2026
Nifty Hoops
Distributor / manufacturer
The Ann Arbor hoophouse maker known for community-build installations, a barn raising with your neighbors.
A gothic tunnel that goes up in a day with help, and the story to go with it.
Visit ↗Checked Aug 30, 2026
No-Till Farmer
Publication / media
The no-till row-crop trade publication since 1972: equipment and agronomy for farming without the plow.
Fifty years of no-till practice, from the practitioners.
Visit ↗Checked Aug 30, 2026
No-Till Growers
Publication / media
The best free technical video and podcast library in ecological market gardening, posting near daily, with real numbers from working farms.
Soil-first production methods taught relentlessly and free, by the most prolific serious educator on YouTube.
Visit ↗Checked Aug 30, 2026
No-till on the Plains Winter Conference
Event
The plains soil-health conference, each January in Kansas, teaching continuous no-till systems since the nineties.
The deepest bench of working no-till farmers in one room.
Visit ↗Checked Aug 30, 2026
NOAA Climate Data Online
Data / API
Historical US station climate records: the archive behind thirty-year normals and frost-date history.
The real frost dates for your nearest station, not the folklore ones.
Visit ↗Checked Aug 30, 2026
NOAA Storm Events Database
Dataset
The historical record of storms, hail, and severe weather by county.
Documentation for insurance and the honest history of what weather your county gets.
Visit ↗Checked Aug 30, 2026
NOFA Summer Conference
Event
The Northeast organic community's summer gathering, plus each state chapter's winter conference.
The Northeast's organic calendar anchor, twice a year counting your state chapter.
Visit ↗Checked Aug 30, 2026
NOP National List
Reference work
The organic regulation's substance list itself: what is allowed, restricted, and prohibited, at the substance level rather than the brand level.
The ground truth under OMRI and every certifier's opinions.
Visit ↗Checked Aug 30, 2026
North American Raspberry and Blackberry Association
Organization
The membership organization for bramble growers: production guides and the caneberry grower network.
The people who know brambles, if berries are your row.
Visit ↗Checked Aug 30, 2026
North American Strawberry Growers Association
Organization
The strawberry grower association: research funding and production conferences.
The strawberry crowd and the research they fund.
Visit ↗Checked Aug 30, 2026
Northeast Organic Farming Association
Organization
Seven state chapters of organic farmers and gardeners, going since 1971: workshops, certification help, and a summer conference.
Your state chapter is the local organic community in the Northeast.
Visit ↗Checked Aug 30, 2026
NPIC (National Pesticide Information Center)
Organization
Objective pesticide science from Oregon State and EPA: fact sheets on nearly every active ingredient, and a live hotline, 1-800-858-7378, with a human who does this all day.
Someone qualified to call about an exposure, a label term, or whether something is safe around the dog. Almost nobody knows this exists.
Visit ↗Checked Aug 30, 2026
NPIRS state pesticide registration
Dataset
One search across most states' pesticide registration data. Federal registration is not enough; the product must be registered in your state too.
Answer 'is this registered in MY state' without hunting through fifty ag department sites.
Visit ↗Checked Aug 30, 2026
NRCS Soil Data Access
Data / API
Direct query access to the national soils database: SQL over REST.
Soil properties for any field polygon, programmatically.
Visit ↗Checked Aug 30, 2026
NYSPAD (New York pesticide database)
Dataset
New York's pesticide administration database, with the state-approved label PDFs. New York often lags or restricts beyond the federal label.
New York growers confirm registration and download the New York specific label.
Visit ↗Checked Aug 30, 2026
OAT Sketches (open firmware)
Software tool
Free, open firmware for cheap sensors: flash an ESP32 from the browser and it reads probes and reports to a place you own. Source is public on GitHub.
The build-one-tonight software, tested on the bench and in the field.
Visit ↗Checked Aug 30, 2026
Offrange
Publication / media
Excellent original reporting on farm economics from the Ambrook team; formerly named Ambrook Research.
Sharp, free journalism about the business you are actually in.
Visit ↗Checked Aug 30, 2026
OGC SensorThings API
Standard
The open, royalty-free standard for publishing sensor observations over REST and MQTT, with open-source servers available.
The grown-up open way to publish a weather station or soil sensor feed.
Visit ↗Checked Aug 30, 2026
Ohio Earth Food
Distributor / manufacturer
One of the original organic input suppliers in the country, since 1972: Re-Vita fertilizers, humates, and micronutrients direct to growers.
Organic inputs from people who sold them before organic was a market.
Visit ↗Checked Aug 30, 2026
Ohio State OHCEAC
University program
Ohio State's Controlled Environment Agriculture Center: research, hydroponics workshops, and disease management resources.
Midwest CEA research and workshops with a practical bent.
Visit ↗Checked Aug 30, 2026
OMRI Products List
Dataset
The independent nonprofit review of input products against organic standards, searchable free. Note it is a paid review service for makers: absence from the list does not mean prohibited.
The default 'can I use this and keep my certification' check.
Visit ↗Checked Aug 30, 2026
Onset (HOBO)
Distributor / manufacturer
- Active
- Paid
- Link unresponsive at last check
The Massachusetts data logger maker: HOBO loggers for soil temperature, humidity, and light, research-grade records cheap.
The logger university extension tells you to buy for a trial.
Visit ↗Checked Aug 30, 2026
Open Food Network
Software tool
Open-source online marketplace software run by a global federation of nonprofits: twenty-five hundred farms and food hubs selling direct in fifteen countries.
Sell online without platform lock-in or a percentage skimmed by a landlord you cannot leave.
Visit ↗Checked Aug 30, 2026
Open Soil Spectral Library
Dataset
A global open database of soil spectra with a free prediction engine: upload a scan, get soil property estimates.
The open-science path to cheap soil analysis as DIY spectrometers mature.
Visit ↗Checked Aug 30, 2026
Open Source Seed Initiative
Organization
Copyleft for seeds: a pledge that keeps varieties free to save, replant, and breed from, forever.
Varieties no patent can ever take away from you.
Visit ↗Checked Aug 30, 2026
Open Textbook Library agriculture shelf
Reference work
Peer-reviewed open college textbooks, free to read and reuse; browse to the agriculture subject shelf.
College-level plant and soil science without the bookstore bill.
Visit ↗Checked Aug 30, 2026
Open-Meteo
Data / API
An open-source weather API blending fifteen-plus national models, no key required, with soil temperature, soil moisture, and reference evapotranspiration among its variables.
The easiest forecast feed for an ESP32 or Home Assistant dashboard; there is already an HA integration.
Visit ↗Checked Aug 30, 2026
OpenET
Data / API
Satellite-measured evapotranspiration at field scale across forty-eight states, with the FARMS tool for individual farmers and a REST API.
See how much water your fields actually consumed, monthly, free. This was thousands of dollars a field a decade ago.
Visit ↗Checked Aug 30, 2026
OpenSourceAgriculture index and newsletter
Reference work
The actively curated index of open ag datasets, models, and hardware, from the OpenWeedLocator author, with a companion newsletter.
The research side of open ag, kept current by someone who ships hardware himself.
Visit ↗Checked Aug 30, 2026
OpenSprinkler
Hardware
The proven open irrigation controller: buy the hardware or build it, firmware and weather logic all open and still releasing.
Irrigation control with weather smarts that answers to you, not a cloud subscription.
Visit ↗Checked Aug 30, 2026
OpenTEAM
Community
The farmer-driven open technology ecosystem: interoperable open tools for farm records, soil health, and decision support.
The community wiring open farm tools together so your data enters once and works everywhere.
Visit ↗Checked Aug 30, 2026
OpenValve
Hardware
A 3D-printable irrigation pinch valve, the fastest-growing new open farm hardware project of the past year.
Print your own valves at the makerspace instead of buying them by the dozen.
Visit ↗Checked Aug 30, 2026
OpenWeedLocator
Hardware
A camera-and-Raspberry-Pi weed detector for spot spraying, peer-reviewed and buildable for a few hundred dollars, with excellent documentation.
The gentlest on-ramp to practical machine vision on a farm.
Visit ↗Checked Aug 30, 2026
Organic Farming Research Foundation
Organization
A nonprofit that funds organic farming research and translates it into free grower guides and webinars.
Research-based organic answers without reading the journals yourself.
Visit ↗Checked Aug 30, 2026
Organic Grower Summit
Event
The organic production and supply-chain summit, late fall in Monterey, California.
Where commercial organic growers meet their buyers and suppliers.
Visit ↗Checked Aug 30, 2026
Organic Seed Alliance
Organization
The nonprofit for organic seed systems: free seed-production manuals and on-farm participatory breeding training.
How to grow your own seed crop properly, taught free.
Visit ↗Checked Aug 30, 2026
Organic Trade Association
Organization
The trade association for the organic industry: market data and regulatory tracking.
Where the organic market numbers and rule changes get reported first.
Visit ↗Checked Aug 30, 2026
Osborne Quality Seeds
Distributor / manufacturer
The professional vegetable seed supplier in Washington: pelleted, organic, and precision amounts with small-farm-friendly minimums.
Pro-grade seed service without pro-grade minimums.
Visit ↗Checked Aug 30, 2026
OSU Organic Fertilizer and Cover Crop Calculator
Software tool
Oregon State's calculator predicting plant-available nitrogen from organic amendments and comparing cost per pound.
Turn a soil test and a pallet of options into an application plan with honest math.
Visit ↗Checked Aug 30, 2026
Paperpot Co
Distributor / manufacturer
The importer of the paperpot transplanting system and Jang seeders, run by the Farm Small Farm Smart podcast's Diego Footer.
Transplant a bed in minutes, and hundreds of hours of free small-farm business education from the same house.
Visit ↗Checked Aug 30, 2026
PASA Sustainable Agriculture Conference
Event
Pennsylvania's big February sustainable-farming conference, one of the strongest education programs in the East.
A winter's worth of learning in a long weekend.
Visit ↗Checked Aug 30, 2026
PERC (Pesticide Educational Resources Collaborative)
Reference work
The official free Worker Protection Standard training library: EPA-approved videos and manuals, English and Spanish.
The compliance training people pay consultants for, sitting free, if you have even one non-family employee.
Visit ↗Checked Aug 30, 2026
Pesticide Environmental Stewardship
Reference work
The multi-university site on drift, sprayer calibration, storage, and disposal.
Teach yourself calibration and drift management the right way, free.
Visit ↗Checked Aug 30, 2026
Pesticide Properties DataBase
Dataset
Free academic data on eighteen hundred active ingredients: environmental fate, bee toxicity, leaching potential. The numbers behind the label warnings. European regulatory fields differ from US status.
Compare two actives on bee toxicity or groundwater risk before choosing. Virtually unknown outside academia.
Visit ↗Checked Aug 30, 2026
Plant Marvel Laboratories
Distributor / manufacturer
Nutrient and amendment maker. We hold structured data on 6 of their products: analysis, elements, pH effect, and dosing.
Run their actual products in our nutrient calculators before you buy a jug.
Visit ↗Checked Aug 30, 2026
PlantCV
Software tool
Ten years of open plant-phenotyping image analysis in Python, with version four lowering the bar for non-coders.
Measure plants from photographs the way the research stations do.
Visit ↗Checked Aug 30, 2026
Plants For A Future
Dataset
A database of seven thousand edible and useful plants with cultivation details.
Research the uncommon perennial and permaculture crops nobody else documents.
Visit ↗Checked Aug 30, 2026
PlantVillage
Software tool
AI plant disease diagnosis, trained on more than fifty thousand images, that runs on a phone even offline.
Photograph a sick leaf and get a diagnosis on the spot.
Visit ↗Checked Aug 30, 2026
Pollinator Partnership
Organization
The largest pollinator-conservation nonprofit, with free planting guides matched to your ecoregion by zip code.
Type your zip, get the exact planting guide for your ecological region, free.
Visit ↗Checked Aug 30, 2026
Practical Farmers of Iowa
Community
The gold standard of farmer-led research: members run replicated trials on their own farms and publish the results, hundreds of them, free.
Real on-farm trial data on cover crops, small grains, and horticulture, from farmers rather than salesmen.
Visit ↗Checked Aug 30, 2026
Premier Tech (PRO-MIX)
Distributor / manufacturer
The family-controlled Quebec company behind PRO-MIX, the default professional peat mixes, whose free Training Center articles are genuinely good agronomy.
The standard mixes, and free schooling on media, fertility, and root disease.
Visit ↗Checked Aug 30, 2026
PRISM Climate Group
Dataset
Gridded US climate normals and dailies at eight hundred meter resolution.
The true thirty-year precipitation and temperature normals for your exact parcel.
Visit ↗Checked Aug 30, 2026
Produce Safety Alliance
University program
The Cornell-led national training collaborative for the FSMA Produce Safety Rule; its grower training is the standard course.
The class that satisfies the federal training requirement, plus free fact sheets.
Visit ↗Checked Aug 30, 2026
Produce Traceability Initiative
Standard
The produce industry's case-level traceability labeling standard, with practical guidance for the federal traceability rule.
The must-know before scaling into wholesale produce.
Visit ↗Checked Aug 30, 2026
Progressive Farmer / DTN
Publication / media
The largest-circulation US farm magazine, riding on DTN's market and weather data spine.
Row-crop news with real market data underneath.
Visit ↗Checked Aug 30, 2026
Prospiant
Distributor / manufacturer
The 2021 merger of Rough Brothers, Nexus, and ThermoEnergy: engineered commercial greenhouses. The old names no longer exist as brands.
Gutter-connect engineering when a grower graduates to real commercial glass.
Visit ↗Checked Aug 30, 2026
PubChem
Data / API
NIH's giant open chemistry database: toxicity, hazard classifications, and literature for any chemical, pesticide actives included, with a full REST API.
The deep dive on one chemical when you want the primary numbers.
Visit ↗Checked Aug 30, 2026
Quivira Coalition New Agrarian Program
Organization
Regenerative ranching nonprofit running paid eight-month apprenticeships on working Western ranches.
A paid path into regenerative ranching, boots on real ground.
Visit ↗Checked Aug 30, 2026
Rain-Flo Irrigation
Distributor / manufacturer
The Lancaster County manufacturer and dealer: drip supplies plus the vegetable plasticulture iron, mulch layers and water-wheel transplanters, at Plain-community prices.
The plasticulture standard for market growers, built where practicality is a virtue.
Visit ↗Checked Aug 30, 2026
REAP energy grants
Funding program
- Active
- Free
- Link unresponsive at last check
The Rural Energy for America Program funds renewable energy and efficiency: solar, better greenhouse glazing, efficient equipment.
Federal help paying for the solar array or the efficient upgrade you were pricing anyway.
Visit ↗Checked Aug 30, 2026
RED Gardens
Publication / media
Systematic comparative growing trials, quantified and honestly reported: the most genuinely data-driven grower-educator on YouTube.
What happens when someone actually measures their garden methods for a decade.
Visit ↗Checked Aug 30, 2026
REGENERATE Conference
Event
The Southwest's regenerative ranching and agriculture conference, each fall, hosted by the Quivira Coalition and partners.
The working-lands regenerative community, ranchers included.
Visit ↗Checked Aug 30, 2026
Regenerative Organic Alliance
Organization
The nonprofit behind the Regenerative Organic Certified label, a rung above USDA Organic covering soil, animals, and workers.
A certification ladder beyond organic, if your market rewards it.
Visit ↗Checked Aug 30, 2026
Regional IPM Centers
University program
Four USDA regional centers with crop profiles and pest management strategic plans tuned to each region.
The IPM playbook for your crop in your region, not a national average.
Visit ↗Checked Aug 30, 2026
Repair Café
Community
A worldwide network of free volunteer repair events, thousands of them, with a locator. Bring the broken thing; leave with it working and knowing why.
Free hands and multimeters for a dead controller or a balky pump, and the repair folks know every other workshop in town.
Visit ↗Checked Aug 30, 2026
Resource Innovation Institute
Organization
The nonprofit benchmarking energy and water efficiency in controlled environment agriculture: free best-practice guides on lighting, HVAC, and water plus PowerScore benchmarking.
Free engineering-grade guides to cut your grow's power and water bills.
Visit ↗Checked Aug 30, 2026
Rimol Greenhouse Systems
Distributor / manufacturer
The family New Hampshire greenhouse and high-tunnel manufacturer: snow-rated Nor'Easter tunnels engineered for hard winters.
The tunnel that holds when the snow comes; the Northern standard for cost-shared tunnels.
Visit ↗Checked Aug 30, 2026
Rivulis
Distributor / manufacturer
The global drip manufacturer behind T-Tape, the tape most market growers actually run; absorbed Jain's international irrigation business in 2023.
T-Tape by any other dealer; there is no separate Jain USA to look for anymore.
Visit ↗Checked Aug 30, 2026
Rodale Institute
Organization
The pioneer organic research farm, running since 1947, home of the long-running Farming Systems Trial comparing organic and conventional side by side.
Free consulting for organic transition and research-backed practice guides from the people who started it all.
Visit ↗Checked Aug 30, 2026
Rogue Farm Corps
Organization
Structured season-long farm internships and apprenticeships on Oregon host farms; the model program others copy.
Immersive training with a curriculum, not just a summer of weeding.
Visit ↗Checked Aug 30, 2026
Roots Organics
Distributor / manufacturer
Nutrient and amendment maker. We hold structured data on 3 of their products: analysis, elements, pH effect, and dosing.
Run their actual products in our nutrient calculators before you buy a jug.
Visit ↗Checked Aug 30, 2026
SARE farmer grants
Funding program
The grants a farmer can apply for directly: ten to thirty thousand dollars to run a real experiment on your own operation, through your SARE region.
Paid to answer your own question, and your results join the public library.
Visit ↗Checked Aug 30, 2026
SAREF4AGRI
Standard
The European standards body's free ontology for smart agriculture sensors: soil moisture, irrigation, livestock, formally described.
A free formal vocabulary for exactly the sensors we teach.
Visit ↗Checked Aug 30, 2026
Savory Institute
Organization
The holistic-management grazing network, with more than thirty training hubs worldwide.
Grazing-planning training through a regional hub if you run animals on grass.
Visit ↗Checked Aug 30, 2026
Seed Savers Exchange
Organization
The largest US nonprofit seed bank, twenty-seven thousand heirloom varieties in Decorah, Iowa, with a member-to-member exchange.
Heirlooms you cannot buy anywhere, and the community keeping them alive.
Visit ↗Checked Aug 30, 2026
SeedLinked
Software tool
A crowdsourced variety-trial platform: ratings from dozens of real farms per variety.
How a variety actually performed across farms in your climate.
Visit ↗Checked Aug 30, 2026
Seedway
Distributor / manufacturer
The commercial vegetable seed division of the GROWMARK co-op, with regional reps across the East.
Where market growers graduate for volume onion, sweet corn, and vine-crop seed.
Visit ↗Checked Aug 30, 2026
Senninger
Distributor / manufacturer
- Active
- Paid
- Link unresponsive at last check
The Florida sprinkler maker, now a Hunter company, whose Wobblers are beloved for germination and frost protection.
The overhead sprinkler the seed-starting crowd swears by.
Visit ↗Checked Aug 30, 2026
Sensaphone
Distributor / manufacturer
The forty-year-old remote monitoring and alarm maker: the classic greenhouse freeze and power-failure phone alarm.
The device generations of growers bought after their first frozen house.
Visit ↗Checked Aug 30, 2026
Seven Springs Farm Supply
Distributor / manufacturer
The Virginia organic farming supply house since 1990: organic fertilizers, cover crop seed, and row cover, shipped nationally with real advice.
The organic mail-order the mid-Atlantic leans on, with a human who farms.
Visit ↗Checked Aug 30, 2026
SIP (Sustainable Irrigation Platform)
Software tool
A long-lived Python irrigation controller for the Raspberry Pi, plugin-extensible and still actively maintained.
Roll-your-own irrigation scheduling with a decade of community plugins.
Visit ↗Checked Aug 30, 2026
Slow Food USA
Organization
The US arm of the good, clean, fair food movement: the Ark of Taste heritage varieties and local chapters.
Customers who care, and the heritage-variety honor roll.
Visit ↗Checked Aug 30, 2026
Smart Home Junkie
Publication / media
Current, competent Home Assistant tutorials whose 2026 garden-watering guide took the top search slot in weeks.
The freshest HA irrigation walkthroughs going.
Visit ↗Checked Aug 30, 2026
Smart Irrigation for Home Assistant
Software tool
Evapotranspiration-based watering duration for Home Assistant: it does the FAO-56 math against real weather so you water what the plants actually used.
Irrigation that follows the weather instead of the calendar, free, in the platform you already run.
Visit ↗Checked Aug 30, 2026
Soil Health Institute
Organization
A scientific nonprofit working out which soil health measurements actually matter and what they are worth in dollars.
Guidance on which soil health indicators are worth paying a lab to test.
Visit ↗Checked Aug 30, 2026
SoilGrids
Data / API
Global machine-learning soil property maps at two hundred fifty meters, with a REST API.
Soil estimates for anywhere on earth the US survey does not reach.
Visit ↗Checked Aug 30, 2026
SoilWeb
Software tool
The soil survey on a map: tap anywhere and see the full soil profile, on the web or the phone app.
Stand in a field and see the mapped soil under your boots, in real time.
Visit ↗Checked Aug 30, 2026
Southeast Regional Fruit and Vegetable Conference
Event
The Southeast's big specialty-crop meeting, each January in Savannah.
The winter meeting for southeastern fruit and vegetable growers.
Visit ↗Checked Aug 30, 2026
Southeastern US Vegetable Crop Handbook
Reference work
The Southeast's annually updated commercial vegetable production bible, free as a full PDF.
The current-year production book for the South, free.
Visit ↗Checked Aug 30, 2026
Southern Exposure Seed Exchange
Distributor / manufacturer
The worker-run Virginia co-op: heat-adapted, Southeast-proven varieties and seed-saving know-how.
Seed that already knows Southern summers.
Visit ↗Checked Aug 30, 2026
Southern SAWG Conference
Event
The South's sustainable agriculture conference, each January, with one of the strongest practical-workshop slates anywhere.
Southern growers teaching southern growers, in January when you can leave the farm.
Visit ↗Checked Aug 30, 2026
Specialty Crop Block Grants
Funding program
Federal money that flows through each state's department of agriculture specifically for fruit, vegetable, and specialty crop projects.
Your state ag department's pot for specialty crops; watch their annual call.
Visit ↗Checked Aug 30, 2026
Spectrum Technologies
Distributor / manufacturer
The Illinois ag measurement maker: WatchDog weather stations, soil moisture meters, and chlorophyll meters pitched at growers, not labs.
Field-scouting instruments with a knowledge base that teaches their use.
Visit ↗Checked Aug 30, 2026
Spider Farmer
Distributor / manufacturer
Grow light maker. We hold verified fixture specs for 2 of their lights: PPF, efficacy, power, coverage, with provenance.
Compare their real fixture numbers in our lighting tools before you spend.
Visit ↗Checked Aug 30, 2026
State agricultural mesonets
Dataset
Many states run agricultural weather networks: Oklahoma's Mesonet is the gold standard, with AgWeatherNet in Washington, FAWN in Florida, CIMIS in California, and AgriMet in the Northwest.
Hourly soil moisture, ET, and frost data from real stations in your state, usually free.
Visit ↗Checked Aug 30, 2026
State Pesticide Safety Education Programs
University program
Every land-grant runs a pesticide safety education program: applicator training, study manuals, exam prep, recertification credits. Cornell's is the linked example; find yours through your state extension.
The path to a private applicator license if you ever need restricted-use products.
Visit ↗Checked Aug 30, 2026
Stokes Seeds
Distributor / manufacturer
The commercial vegetable seed house serving the Great Lakes and Northeast with a strong rep network.
The other pro seed house neighbors mention alongside Seedway.
Visit ↗Checked Aug 30, 2026
Stuppy Greenhouse
Distributor / manufacturer
The Kansas City greenhouse manufacturer with roots to 1873: commercial structures and hydronic heat for serious year-round production.
The step up when your operation outgrows kit tunnels.
Visit ↗Checked Aug 30, 2026
Successful Farming
Publication / media
The flagship general farm magazine, free online.
Mainstream row-crop coverage and machinery talk.
Visit ↗Checked Aug 30, 2026
Sun Gro Horticulture
Distributor / manufacturer
The largest North American peat and mix producer: Sunshine and Black Gold, at every distributor.
The other default mix, wherever you already shop.
Visit ↗Checked Aug 30, 2026
Sun System
Distributor / manufacturer
Grow light maker. We hold verified fixture specs for 1 of their lights: PPF, efficacy, power, coverage, with provenance.
Compare their real fixture numbers in our lighting tools before you spend.
Visit ↗Checked Aug 30, 2026
Sunbelt Ag Expo
Event
The Southeast's October field show at Moultrie, Georgia, with harvest demonstrations on a working research farm.
The South's farm show, machinery running in the dirt.
Visit ↗Checked Aug 30, 2026
SurveyStack and Our-Sci
Software tool
The open data-collection platform behind OpenTEAM and the Bionutrient Institute, with hooks for hand-held instruments and the Modus soil standard.
Community-owned research plumbing when your farm joins a study.
Visit ↗Checked Aug 30, 2026
Suståne Natural Fertilizer
Distributor / manufacturer
Nutrient and amendment maker. We hold structured data on 7 of their products: analysis, elements, pH effect, and dosing. 5 are OMRI listed.
Run their actual products in our nutrient calculators before you buy a jug.
Visit ↗Checked Aug 30, 2026
Synoptic Data
Data / API
An aggregator API over a hundred thousand US weather stations, including many mesonets.
One API call to the nearest station of any network.
Visit ↗Checked Aug 30, 2026
Territorial Seed
Distributor / manufacturer
The family Oregon seed house whose trial-farm heritage shows in the catalog notes, tuned for year-round West Coast growing.
Varieties proven where winters are wet and summers are dry.
Visit ↗Checked Aug 30, 2026
TFI and 4R Nutrient Stewardship
Organization
- Active
- Free
- Link unresponsive at last check
The fertilizer industry's stewardship framework: right source, rate, time, place. The framework is sound agronomy that extension endorses; the sponsor is the industry's advocate. Both things are true.
A memorable frame for nutrient decisions, provenance understood.
Visit ↗Checked Aug 30, 2026
The Calculators (134 free tools)
Software tool
134 free calculators built by the collective: VPD, nutrients, lighting, structures, livestock, bees, and more. Every one runs in the browser and can be embedded on your own site.
Run the numbers on nearly any growing question without a spreadsheet or a subscription.
Visit ↗Checked Aug 30, 2026
The Land Institute
Organization
The research nonprofit breeding perennial grain crops, including Kernza, toward agriculture that does not need replanting every year.
A window into the perennial future of grain, with field days and publications.
Visit ↗Checked Aug 30, 2026
The Livestock Conservancy
Organization
The heritage-breed conservation nonprofit since 1977: the Conservation Priority List, breed selection guides, and a breeder directory.
Which rare breed fits your farm, and who will sell you starting stock.
Visit ↗Checked Aug 30, 2026
The OAT Ag Atlas
Dataset
A national directory of the places of American agriculture: farmers markets, agritourism, CSAs, food hubs, on-farm markets, processors, with county profiles built on the USDA census.
Find the ag places near you, or claim your own listing and control how it shows.
Visit ↗Checked Aug 30, 2026
The oat-ods data schema
Standard
An open data schema for grower observations, so readings mean the same thing across tools. Published with a developer reference and compatibility notes.
A common shape for your data that no vendor can take away.
Visit ↗Checked Aug 30, 2026
The Packer
Publication / media
The fresh produce supply chain's daily read, whose Fresh Trends survey and Produce Market Guide are reference works in their own right.
What buyers and retailers are thinking, and real consumer demand data by commodity.
Visit ↗Checked Aug 30, 2026
THRIVE Top 50
Reference work
The annual ranking of the fifty most innovative growth-stage agtech and foodtech startups, published each January.
A yearly scan of what the money thinks is next.
Visit ↗Checked Aug 30, 2026
Tilmor
Distributor / manufacturer
Ohio-built cultivating tractors, including a new electric, plus basket weeders and wheel hoes, priced for real small farms.
The cultivation iron that fills the gap the old Allis-G left behind.
Visit ↗Checked Aug 30, 2026
Tool Library Alliance
Community
The US network of tool lending libraries, with a member map. Borrow tools the way you borrow books.
Borrow the four-hundred-dollar tool you need twice a year instead of buying it.
Visit ↗Checked Aug 30, 2026
True Leaf Market
Distributor / manufacturer
The Salt Lake seed retailer that absorbed the 1917 Kitazawa line: Asian vegetable varieties plus microgreens and cover crop seed by the pound.
The Kitazawa Asian-vegetable heritage lives here now, not at the old name.
Visit ↗Checked Aug 30, 2026
Tunnel Vision Hoops
Distributor / manufacturer
Cleveland-made DIY high-tunnel kits, fourteen to thirty feet wide, custom sizes for odd lots, with real technical support.
American-made kits sized to your actual space, urban lots included.
Visit ↗Checked Aug 30, 2026
UC IPM
Reference work
The most complete free integrated pest management encyclopedia: identification, thresholds, and management by crop, plus degree-day tools and bee precaution ratings.
Look up any pest and get research-backed thresholds and least-toxic controls first.
Visit ↗Checked Aug 30, 2026
UC IPM Bee Precaution Ratings
Dataset
Expert-reviewed ratings of active-ingredient toxicity to honey bees, adult and brood, often stricter than the label language.
Among the legal options, pick the one least hazardous to your bees, and time it right.
Visit ↗Checked Aug 30, 2026
UF/IFAS greenhouse and hydroponics resources
University program
Florida's small farms program: hot-climate protected culture and hydroponics resources from the state that grows through summer.
Greenhouse answers tuned for heat, not just northern winters.
Visit ↗Checked Aug 30, 2026
Upstream Ag Insights
Publication / media
The weekly analysis newsletter on agribusiness and agtech strategy, free tier plus paid depth.
How the input and tech companies actually think, decoded weekly.
Visit ↗Checked Aug 30, 2026
Urban Ag News
Publication / media
The free trade publication covering urban agriculture and CEA in plain language, with serious greenhouse agronomy behind it.
Readable CEA education from people who have grown commercially.
Visit ↗Checked Aug 30, 2026
Urban Growers Collective
Organization
The Chicago urban-farm nonprofit whose farmer-training program is a national model for urban food production.
The blueprint for serious urban farming, proven on fourteen acres of Chicago.
Visit ↗Checked Aug 30, 2026
US Composting Council STA program
Organization
- Active
- Free
- Link unresponsive at last check
The Seal of Testing Assurance: participating compost producers test to standard methods and publish a technical data sheet. Producer-disclosed testing, not government certification.
Buy compost with actual lab numbers. Ask any supplier for their data sheet; the good ones have it.
Visit ↗Checked Aug 30, 2026
US Men's Sheds Association
Community
A workshop and social club where members gather to build things, with a zip-code shed locator. Born in Australia, growing here.
Woodshop access plus retired machinists and electricians who are happy to teach. The person who shows you an ESP32 is not a scary thing may be here.
Visit ↗Checked Aug 30, 2026
USA National Phenology Network
Data / API
Daily gridded accumulated growing degree day maps and pest emergence forecasts, plus the Nature's Notebook citizen science program.
National degree-day maps and pheno-forecasts you can pull by point through their geoserver.
Visit ↗Checked Aug 30, 2026
USDA Ag Data Commons
Dataset
USDA's public repository of research datasets: the raw data behind the papers, from trials to soils to genomics.
Pull the actual datasets behind USDA research instead of just reading summaries.
Visit ↗Checked Aug 30, 2026
USDA Agricultural Research Service
Organization
USDA's in-house research agency, ninety-plus locations, public research on every crop, home of the National Agricultural Library.
The research your taxes already paid for, on whatever you grow.
Visit ↗Checked Aug 30, 2026
USDA AMS Market News
Data / API
Daily wholesale and terminal-market price reports for produce, livestock, and grain, with a free API.
What your crop actually sold for at the nearest terminal market, so you never price blind.
Visit ↗Checked Aug 30, 2026
USDA CropScape and the Cropland Data Layer
Dataset
The annual satellite-derived crop map of the entire country, now at ten meter resolution, going back more than fifteen years.
See what every field around you grew for the last fifteen years. Rotation intel nobody realizes is public.
Visit ↗Checked Aug 30, 2026
USDA ERS Data Products
Dataset
The Economic Research Service's datasets: costs of production, the food dollar, and market outlooks.
Benchmark your enterprise budget against national cost-of-production data.
Visit ↗Checked Aug 30, 2026
USDA Local Food Portal
Dataset
USDA's directories of farmers markets, CSAs, food hubs, and on-farm markets, with an API. The same well our Ag Atlas draws from.
List your operation where the government looks, and find every market within driving distance.
Visit ↗Checked Aug 30, 2026
USDA NASS Quick Stats
Data / API
The most comprehensive US agricultural statistics database: every crop, county, and year, including the Census of Agriculture, with a free keyed API.
County-level yields, acreage, and prices to benchmark your own operation against.
Visit ↗Checked Aug 30, 2026
USDA Organic INTEGRITY Database
Dataset
The registry of every certified organic operation and certifier worldwide, with an API and full downloads.
Verify a supplier's organic certificate is real and current, or find a certifier.
Visit ↗Checked Aug 30, 2026
USDA PLANTS Database
Dataset
The authoritative US plant database: taxonomy, distribution by county, and characteristics.
Verify any plant's identity, native status, and range.
Visit ↗Checked Aug 30, 2026
USDA SARE
Funding program
Sustainable Agriculture Research and Education: USDA's grant program with four regional offices, farmer and rancher grants you can apply for directly, and a free book library that includes the standard texts.
Ten to thirty thousand dollars to try something on your own farm, and free full books like Building Soils for Better Crops.
Visit ↗Checked Aug 30, 2026
USDA Urban Agriculture (OUAIP)
Funding program
USDA's Office of Urban Agriculture and Innovative Production: urban ag grants, county-office navigation, and composting programs.
The federal front door for city growing, with money behind it.
Visit ↗Checked Aug 30, 2026
USGS EarthExplorer
Dataset
The full Landsat archive, more than fifty years of it, free to download.
Decades of imagery of your land, for documenting long-term change.
Visit ↗Checked Aug 30, 2026
uspest.org degree-day models
Software tool
A hundred and fifty degree-day pest and plant models runnable against twenty thousand US stations, with maps.
When does this pest hatch at MY place, answered for the whole country.
Visit ↗Checked Aug 30, 2026
Utah State crop physiology lab (Bugbee)
University program
Bruce Bugbee's lab: the plain-spoken science of light, photosynthesis, and controlled environments, generously published.
The lighting science behind every LED claim, from the source everyone cites.
Visit ↗Checked Aug 30, 2026
Vegetable Growers News
Publication / media
Monthly for commercial vegetable growers with strong farm-market coverage; sister titles include Fruit Growers News, Organic Grower, and Spudman.
Production and marketing coverage sized for real vegetable farms.
Visit ↗Checked Aug 30, 2026
Veggie Compass
Software tool
The UW-Madison whole-farm profit-management tool for diversified vegetable farms. Its old standalone domain was dropped and squatted; this is the real home.
Work out your true cost and profit per crop per sales channel.
Visit ↗Checked Aug 30, 2026
Vermont Compost Company
Distributor / manufacturer
The Montpelier compost-based potting soil maker whose Fort Vee is practically a proper noun among organic market growers.
The transplant mix the organic growers swear by, shipped by the pallet.
Visit ↗Checked Aug 30, 2026
Wadsworth Control Systems
Distributor / manufacturer
The Colorado family firm building greenhouse controls since the 1930s: vent motors, curtain systems, and climate controllers.
One of the oldest names in greenhouse automation, still family-run.
Visit ↗Checked Aug 30, 2026
Wageningen University and Research
University program
The world's top agricultural university, in the Netherlands, and the reference point for greenhouse horticulture science.
Where greenhouse growing is studied hardest; their publications set the bar.
Visit ↗Checked Aug 30, 2026
Web Soil Survey
Software tool
The official USDA soil survey for nearly every American acre: draw your boundary, get a custom soil report.
Your soil series, drainage class, and capability rating, mapped before you dig.
Visit ↗Checked Aug 30, 2026
World Ag Expo
Event
The largest annual agricultural exposition anywhere, each February in Tulare, California.
Every piece of big iron on earth, three days, one dusty lot.
Visit ↗Checked Aug 30, 2026
World Agri-Tech Innovation Summit
Event
The agtech investment and partnering summit, each March in San Francisco, with a fall edition in London.
Where the money and the technology companies decide what gets built next.
Visit ↗Checked Aug 30, 2026
World Dairy Expo
Event
The global dairy industry's annual meeting, early October in Madison, Wisconsin: cattle shows, equipment, and seminars.
Everything dairy, once a year, one fairgrounds.
Visit ↗Checked Aug 30, 2026
WSDA organic input list
Dataset
Washington State's brand-name materials review, the other list certifiers accept nationally.
Cross-check inputs that are not on OMRI; many compliant products appear on only one of the two.
Visit ↗Checked Aug 30, 2026
WWOOF-USA
Community
Worldwide Opportunities on Organic Farms, US chapter: work-exchange learning stays on fifteen hundred organic farms.
Learn by living on farms, or host learners on yours.
Visit ↗Checked Aug 30, 2026
Xerces pesticide and pollinator guides
Reference work
Guides to minimizing pesticide risk to pollinators and beneficials, including the uncomfortable truth about which organic pesticides still hurt bees.
Honest answers on spinosad and pyrethrins, and habitat alternatives to spraying.
Visit ↗Checked Aug 30, 2026
Xerces Society
Organization
The invertebrate conservation nonprofit: the best free guides anywhere on pollinator habitat, beneficial insects, and pesticide risk.
Regional planting guides and honest answers on which sprays hurt your bees, organic ones included.
Visit ↗Checked Aug 30, 2026
Your land-grant soil testing lab
University program
Every state's extension runs or endorses a soil lab with region-calibrated recommendations; fifteen to thirty dollars a test. Find yours through extension.org.
The starting point of every fertility decision, calibrated for your region's soils.
Visit ↗Checked Aug 30, 2026
Your public library's makerspace
Maker space
Many public libraries now run free makerspaces with 3D printers, cutters, and sometimes soldering benches. There is no national directory of them, so the honest advice is the simple one: walk into your county library and ask.
Free, no membership, staffed by people whose whole job is helping you learn, and already in your county.
Visit ↗Checked Aug 30, 2026
Your state grower conference (pattern)
Event
Nearly every state's fruit-and-vegetable association runs a winter conference; the empire-state, mid-atlantic, and southeast regional shows anchor the circuit. Ask your extension office which one is yours.
The winter meeting where your actual neighbors learn; start there before flying anywhere.
Visit ↗Checked Aug 30, 2026