SproutSmart
SproutSmart Intelligent Garden Sowing

Black Prince · Tomato

Zone 9a Save Garden

Planting Schedule

Add Black Prince to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsJan 16th
Last FrostMar 6th
Transplant / Direct Sow OutdoorsMay 1st
Harvest BeginsJul 25th
Harvest EndsNov 26th

Crop Details

Transplant Conditions: Wait until soil reaches 60°F and nights stay above 50°F before moving outdoors. Harden off for 8 days first.
TraitValue
Days to Maturity85
Sun RequirementsFull Sun
Growth HabitDeterminate
Support NeededCage
Planting DepthDeep
Germination Temp (°F)70
Min Soil Temp (°F)60
Min Night Temp (°F)50
Harden Off (days)8
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’.