SproutSmart
SproutSmart Intelligent Garden Sowing

Green Towers · Lettuce

Zone 2a Save Garden

Planting Schedule

Add Green Towers to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsApr 27th
Last FrostMay 25th
Transplant / Direct Sow OutdoorsMay 25th
Harvest BeginsJul 22nd
Harvest EndsAug 29th

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 Maturity58
Sun RequirementsPart Sun
Growth HabitRosette
Support NeededNone
Planting DepthSurface
Germination Temp (°F)55
Min Soil Temp (°F)40
Min Night Temp (°F)35
Harden Off (days)6
Expert Note: Keep romaine evenly moist and avoid heat stress near maturity by aiming to transplant right around the last frost and shading during the hottest weeks.