SproutSmart
SproutSmart Intelligent Garden Sowing

Boston · Lettuce

Zone 12b Save Garden

Planting Schedule

Add Boston to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsDec 11th
Last FrostJan 1st
Transplant / Direct Sow OutdoorsJan 1st
Harvest BeginsFeb 20th
Harvest EndsDec 31st

Crop Details

Transplant Conditions: Wait until soil reaches 40°F and nights stay above 32°F before moving outdoors. Harden off for 6 days first.
TraitValue
Days to Maturity50
Sun RequirementsPart Sun
Growth HabitRosette
Support NeededNone
Planting DepthNormal
Germination Temp (°F)70
Min Soil Temp (°F)40
Min Night Temp (°F)32
Harden Off (days)6
Expert Note: For butterhead (like Boston), keep seedlings cool and consistently moist—fluctuating temperatures are a common trigger for early bolting.