SproutSmart
SproutSmart Intelligent Garden Sowing

Red Iceberg · Lettuce

Zone 2a Save Garden

Planting Schedule

Add Red Iceberg to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsApr 27th
Last FrostMay 25th
Transplant / Direct Sow OutdoorsMay 25th
Harvest BeginsAug 3rd
Harvest EndsAug 29th

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 Maturity70
Sun RequirementsFull Sun
Growth HabitRosette
Support NeededNone
Planting DepthNormal
Germination Temp (°F)70
Min Soil Temp (°F)40
Min Night Temp (°F)30
Harden Off (days)6
Expert Note: For crisp heads, keep soil consistently cool and evenly moist, and plant early enough to avoid peak heat that can loosen heads.