SproutSmart
SproutSmart Intelligent Garden Sowing

Osmin Purple · Basil

Zone 5b Save Garden

Planting Schedule

Add Osmin Purple to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsMar 23rd
Last FrostMay 4th
Transplant / Direct Sow OutdoorsJun 22nd
Harvest BeginsAug 21st
Harvest EndsOct 5th

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: For the darkest purple color, grow in full sun and avoid letting transplants get chilled—purple basils hold color best with steady warmth after transplanting.