SproutSmart
SproutSmart Intelligent Garden Sowing

Vulcan · Lettuce

Zone 5b Save Garden

Planting Schedule

Add Vulcan to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsApr 13th
Last FrostMay 4th
Transplant / Direct Sow OutdoorsMay 4th
Harvest BeginsJun 18th
Harvest EndsOct 5th

Crop Details

Transplant Conditions: Wait until soil reaches 40°F and nights stay above 30°F before moving outdoors. Harden off for 6 days first.
TraitValue
Days to Maturity45
Sun RequirementsPart Sun
Growth HabitRosette
Support NeededNone
Planting DepthSurface
Germination Temp (°F)70
Min Soil Temp (°F)40
Min Night Temp (°F)30
Harden Off (days)6
Expert Note: For the crispiest heads and best red leaf color, keep lettuce cool and avoid heat spikes—shade cloth after midsummer helps a lot.