Port (adulte) - DeFacto / Wikimedia Commons - CC BY-SA 4.0
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Laitue cultivée
Lactuca sativa
Une feuille verte de saison fraîche consommée crue ou légèrement cuite — parmi les légumes de jardin les plus fondamentaux. Monte en graine (émet des tiges florales) + devient amère par chaleur supérieure à 70°F selon NC State ; les fenêtres de printemps frais + d'automne frais sont les périodes productives dans la plupart des climats nord-américains. Quatre groupes de port : pommée (iceberg, croquante), feuille de chêne, romaine (cos) et beurre (Bibb, Boston).
Edible
Container
Light
Full sun / Part shade
Water
Consistent moisture
Mature size
6-12" tall · 8" apart
Hardy in zones
Annual; NC State profile lists 2a-11b context
AHS heat range
1-6
Plant range authored in AHS heat-zone terms.
Native in Illinois
No
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NC State : « Les feuilles peuvent être utilisées crues ou cuites en salades, sandwiches et autres plats.
Cold hardiness
Future
This plant is grown as an annual; hardiness zones don't apply.
Heat tolerance
Future
Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.
Loading AHS heat-zone data for this location...
Sources & citations
Cite this page
For lesson plans, articles, or research that uses this page. To cite a single upstream fact instead, use its specific source listed below.
Plotwright. (2026, May 17). Laitue cultivée (Lactuca sativa). Retrieved 2026, June 14, from https://plotwright.garden/plants/lactuca-sativa
Sources for every fact
Every fact on this page traces to a source. 18 fields cited - 18 source-backed.
NC State Extension Gardener Plant Toolbox
University extension service
Backs 17 fields
Identity
Summary
Plant type
Light
Moisture
Hardiness
Heat zone
Size
Spacing
Habit
Design roles
Seasonal interest
Growth stages
Lifecycle
Regional guidance
Success tips
Designer notes