Names
No scientific synonyms are recorded for this name.
English: cultivated lettuce, Garden Lettuce, Lettuce, Romaine Lettuce.
In other languages
- Afrikaans: Blaarslaai
- Albanian: Marule
- Arabic: الخَسّ, خس, خس روماني, خس مزروع
- Basque: Letxu, Litchua, Urraza
- Belarusian: Латук
- Catalan: Ancisam, Ansiam, Enciam, LLatuga, Lletuga
- Chinese: 唐生菜, 生菜, 莴苣 wo ju, 萵苣, 蘿蔓萵苣、莜麥菜(油麥菜)、苦菜、牛俐生菜
- Czech: Locika setá, Salát
- Danish: Have-salat
- Dutch: Echte sla, Sla
- Estonian: aedsalat, rooma salat
- Finnish: Lehtisalaatti, Ruokasalaatti, Salaatti
- French: Chicorée des jardins, Laitue, Laitue alimentaire, Laitue annamite, Laitue chinoise, Laitue cultivee, Laitue cultivée, Laitue cultivée, Laitue, Laitue cultivée, Laitue chinoise, Laitue cultivée, Salade, Laitue pour tisane, Lettuce …
- Galician: Achicroia, Alfacer, Alfaga, Alfarza, Leitaruga
- German: Garten-Lattich, Garten-Salat, Gartensalat, Grüner Salat, Kopfsalat
- Greek: Μαρούλι
- Hebrew: חסה (תרבותי)
- Hindi: Salad
- Hungarian: kerti saláta
- Indonesian: Selada
- Italian: Amarulla, Insalata, Lattuca, lattuga, Lattuga coltivata
- Japanese: チシャ, レタス
- Korean: sangchu, 상추
- Lithuanian: Sėjamoji salota
- Norwegian (Bokmål): hagesalat
- Norwegian (Nynorsk): hagesalat
- Polish: sałata, Sałata rzymska, Sałata siewna
- Portuguese: Alface, alface-comum, alface-crespa, alface-lisa, alface-romana, Ansião, laitue, lattuga, lechuga, lettuce, Salada
- Quechua: Pilliyuyu
- Romanian: Лэптучь култиваць
- Russian: Латук посевной
- Serbian: Салата
- Slovak: šalát siaty
- Spanish: Cogollo, Ensalada, Farfalá, Lechuga, Lechuga arrepollada, lechuga romana, Lechugón
- Swedish: Huvudsallat, Laktuk, Sallad, Sallat, Trädgårdssallat
- Tamil: இலைக்கோசு
- Thai: ผักกาดหอม
- Turkish: Marul, Salata
- Ukrainian: Латук посівний, Салат
- Vietnamese: Cây rau diêp, Rau diếp
- Welsh: Golaeth, Gwylaeth, Letus yr Ardd, Letusen yr Ardd, Llaethygen
- arg: Ensalada
- epo: Ĝardena laktuko
- kin: Imboga za leti
- mya: Sa-la, Salat, Salat-ywet, Thaba-bo-ku
- nor: Hagesalat
- sin: සලාද
Names with no language recorded: cultivated lettuce, Fú-mak, garden lettuce, ilimeda, Kopfsalat (DE); Garden Lettuce (EN); Lechuga comun (ES), Lekuke, Litsugas, Obična salata, Saladi, sangchu, ᎠᎪᏍᏓᎩᏍᏗ, 상추.
Where it is recorded
Taxonomy record sources: GBIF (CC BY 4.0), USDA_PLANTS_CATALOG (Public Domain). Loaded from the botanica open cultivated-plant knowledge base and the GBIF backbone; each row keeps its origin.
Growth stages
- Growth: about 35 days
What the sources say it wants
Each line shows the band, then the kind of source and the citation. "Published" means the number is printed on the cited page; "derived" means it was computed from published numbers with the formula recorded on the row; "external API" rows are refreshed nightly from a live source; "curated" rows are OAT's own working values from June 2026.
Whole cycle
| Zone | Measure | Band | Source |
|---|---|---|---|
| Light | Daily light integral at the canopy (mol/m2/d) | 12 to 17 (target 17) (warning below 12) | published: Cornell CEA Hydroponic Lettuce Handbook, 2013 |
| Feed | Boron (ppm) | 0.16 | published: Cornell CEA Hydroponic Lettuce Handbook, 2013 |
| Feed | Calcium (ppm) | 84 | published: Cornell CEA Hydroponic Lettuce Handbook, 2013 |
| Feed | Copper (ppm) | 0.03 | published: Cornell CEA Hydroponic Lettuce Handbook, 2013 |
| Feed | Iron (ppm) | 0.94 | published: Cornell CEA Hydroponic Lettuce Handbook, 2013 |
| Feed | Potassium (ppm) | 215 | published: Cornell CEA Hydroponic Lettuce Handbook, 2013 |
| Feed | Magnesium (ppm) | 24 | published: Cornell CEA Hydroponic Lettuce Handbook, 2013 |
| Feed | Manganese (ppm) | 0.14 | published: Cornell CEA Hydroponic Lettuce Handbook, 2013 |
| Feed | Molybdenum (ppm) | 0.03 | published: Cornell CEA Hydroponic Lettuce Handbook, 2013 |
| Feed | Nitrogen (ppm) | 125 | published: Cornell CEA Hydroponic Lettuce Handbook, 2013 |
| Feed | Phosphorus (ppm) | 31 | published: Cornell CEA Hydroponic Lettuce Handbook, 2013 |
| Feed | Sulfur (ppm) | 35 | published: Cornell CEA Hydroponic Lettuce Handbook, 2013 |
| Feed | Zinc (ppm) | 0.13 | published: Cornell CEA Hydroponic Lettuce Handbook, 2013 |
| Air | Air temperature, day (°C) | 24 | published: Cornell CEA Hydroponic Lettuce Handbook, 2013 |
| Air | Air temperature, night (°C) | 19 | published: Cornell CEA Hydroponic Lettuce Handbook, 2013 |
| Air | CO2 (ppm) | 390 to 1500 (target 1500) | published: Cornell CEA Hydroponic Lettuce Handbook, 2013 |
| Air | Relative humidity (%) | 50 to 70 | published: Cornell CEA Hydroponic Lettuce Handbook, 2013 |
| Root zone | Dissolved oxygen, root zone (ppm) | 4 to 10 (target 7) (warning below 4, alert below 3) | published: Cornell CEA Hydroponic Lettuce Handbook, 2013 |
| Root zone | Root-zone EC (dS/m) | up to 1.3 (warning above 2.1, alert above 3.2) | published: FAO Irrigation and Drainage Paper 29, 1985 |
| Root zone | Root-zone pH (pH) | 5.6 to 6 (target 5.8) | published: Cornell CEA Hydroponic Lettuce Handbook, 2013 |
| Root zone | Root-zone temperature (°C) | up to 25 (target 24) (warning above 25, alert above 26) | published: Cornell CEA Hydroponic Lettuce Handbook, 2013 |
| Timing | Crop coefficient, end of season (ratio) | 0.95 | published: FAO Irrigation and Drainage Paper 56, 1998 |
| Timing | Crop coefficient, initial stage (ratio) | 0.7 | published: FAO Irrigation and Drainage Paper 56, 1998 |
| Timing | Crop coefficient, mid-season (ratio) | 1 | published: FAO Irrigation and Drainage Paper 56, 1998 |
Growth
| Zone | Measure | Band | Source |
|---|---|---|---|
| Light | Daily light integral at the canopy (mol/m2/d) | 12 to 17 (warning above 19.55, alert above 22.1; warning below 10.2, alert below 8.4) | curated: University extension recommended DLI (Purdue/Michigan State CEA) |
| Light | Photoperiod (h) | 16 | curated: University extension recommended DLI (Purdue/Michigan State CEA) |
| Feed | Calcium (ppm) | 120 to 180 (warning above 207, alert above 234; warning below 102, alert below 84) | curated: Typical hydroponic solution targets (Hoagland / Steiner / university CEA) |
| Feed | Potassium (ppm) | 150 to 220 (warning above 253, alert above 286; warning below 127.5, alert below 105) | curated: Typical hydroponic solution targets (Hoagland / Steiner / university CEA) |
| Feed | Magnesium (ppm) | 30 to 50 (warning above 57.5, alert above 65; warning below 25.5, alert below 21) | curated: Typical hydroponic solution targets (Hoagland / Steiner / university CEA) |
| Feed | Nitrogen (ppm) | 100 to 150 (warning above 172.5, alert above 195; warning below 85, alert below 70) | curated: Typical hydroponic solution targets (Hoagland / Steiner / university CEA) |
| Feed | Phosphorus (ppm) | 30 to 50 (warning above 57.5, alert above 65; warning below 25.5, alert below 21) | curated: Typical hydroponic solution targets (Hoagland / Steiner / university CEA) |
| Feed | Sulfur (ppm) | 40 to 80 (warning above 92, alert above 104; warning below 34, alert below 28) | curated: Typical hydroponic solution targets (Hoagland / Steiner / university CEA) |
| Air | Air circulation (ACH) | 15 to 30 (warning above 34.5, alert above 39; warning below 12.75, alert below 10.5) | curated: University extension / CEA greenhouse climate guidelines (aerial setpoints) |
| Air | Air temperature, day (°C) | 18 to 24 (warning above 27.6, alert above 31.2; warning below 15.3, alert below 12.6) | curated: University extension / CEA greenhouse climate guidelines (aerial setpoints) |
| Air | Air temperature, night (°C) | 15 to 18 (warning above 20.7, alert above 23.4; warning below 12.75, alert below 10.5) | curated: University extension / CEA greenhouse climate guidelines (aerial setpoints) |
| Air | CO2 (ppm) | 700 to 1000 (warning above 1150, alert above 1300; warning below 595, alert below 490) | curated: University extension / CEA greenhouse climate guidelines (aerial setpoints) |
| Air | Relative humidity (%) | 50 to 70 (warning above 80.5, alert above 91; warning below 42.5, alert below 35) | curated: University extension / CEA greenhouse climate guidelines (aerial setpoints) |
| Air | Vapor pressure deficit, day (kPa) | 0.6 to 1 (warning above 1.15, alert above 1.3; warning below 0.51, alert below 0.42) | curated: University extension / CEA greenhouse climate guidelines (aerial setpoints) |
| Root zone | Dissolved oxygen, root zone (mg/L) | 6 to 8 (warning above 9.2, alert above 10.4; warning below 5.1, alert below 4.2) | curated: Hydroponic / CEA root-zone targets (solution temp, DO, substrate VWC) |
| Root zone | Root-zone temperature (°C) | 18 to 22 (warning above 25.3, alert above 28.6; warning below 15.3, alert below 12.6) | curated: Hydroponic / CEA root-zone targets (solution temp, DO, substrate VWC) |
| Root zone | Substrate moisture (%) | 50 to 70 (warning above 80.5, alert above 91; warning below 42.5, alert below 35) | curated: Hydroponic / CEA root-zone targets (solution temp, DO, substrate VWC) |
Keystone status
Complete under the keystone KEEP rule: at least one growth stage and at least one band in each of light, air and root zone. This crop can be assembled into a grow recipe and a control contract.
Generated 2026-09-15 from the OAT plant keystone. Source types and citations are carried on every row; the keystone snapshot that the Library instruments read is plant-targets.json and its quality sheet is plant-targets.quality.json.