SproutSmart
SproutSmart Intelligent Garden Sowing

Concept · Lettuce

Zone 3b Save Garden

Planting Schedule

Add Concept to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsApr 21st
Last FrostMay 19th
Transplant / Direct Sow OutdoorsMay 19th
Harvest BeginsJul 18th
Harvest EndsSep 21st

Crop Details

Transplant Conditions: Wait until soil reaches 40°F and nights stay above 35°F before moving outdoors. Harden off for 6 days first.
TraitValue
Days to Maturity60
Sun RequirementsPart Sun
Growth HabitRosette
Support NeededNone
Planting DepthSurface
Germination Temp (°F)70
Min Soil Temp (°F)40
Min Night Temp (°F)35
Harden Off (days)6
Expert Note: For summer crisp/butterhead types, keep soil evenly moist and use light shade or staggered sowings to delay bolting in heat.