SproutSmart
SproutSmart Intelligent Garden Sowing

Dark Opal · Basil

Zone 1a Save Garden

Planting Schedule

Add Dark Opal to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsMay 4th
Last FrostJun 15th
Transplant / Direct Sow OutdoorsAug 10th
Harvest BeginsOct 9th
Harvest EndsJul 15th

Crop Details

Transplant Conditions: Wait until soil reaches 60°F and nights stay above 50°F before moving outdoors. Harden off for 10 days first.
TraitValue
Days to Maturity60
Sun RequirementsFull Sun
Growth HabitUpright
Support NeededNone
Planting DepthNormal
Germination Temp (°F)70
Min Soil Temp (°F)60
Min Night Temp (°F)50
Harden Off (days)10
Expert Note: Start Dark Opal basil indoors for steady, compact growth, then transplant only once nights are consistently warm to preserve leaf color and vigor.