SproutSmart
SproutSmart Intelligent Garden Sowing

Black Prince · Tomato

Zone 1a Save Garden

Planting Schedule

Add Black Prince to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsApr 27th
Last FrostJun 15th
Transplant / Direct Sow OutdoorsAug 10th
Harvest BeginsNov 8th
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 Maturity90
Sun RequirementsFull Sun
Growth HabitIndeterminate
Support NeededCage
Planting DepthDeep
Germination Temp (°F)75
Min Soil Temp (°F)60
Min Night Temp (°F)50
Harden Off (days)10
Expert Note: Start indoors 7 weeks before your average last spring frost, and transplant only once soil is reliably 60°F+ to avoid cold-stunting Siberian/early heirloom tomatoes like ‘Black Prince’.