SproutSmart
SproutSmart Intelligent Garden Sowing

Lacinato Rainbow · Kale

Zone 3b Save Garden

Planting Schedule

Add Lacinato Rainbow to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsApr 21st
Last FrostMay 19th
Transplant / Direct Sow OutdoorsMay 19th
Harvest BeginsJul 13th
Harvest EndsSep 21st

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 Maturity55
Sun RequirementsFull Sun
Growth HabitRosette
Support NeededNone
Planting DepthNormal
Germination Temp (°F)45
Min Soil Temp (°F)40
Min Night Temp (°F)30
Harden Off (days)6
Expert Note: For best color and sweetness, grow kale through cool weather and keep soil consistently moist—harsh heat can dull leaf color and increase bitterness.