SproutSmart
SproutSmart Intelligent Garden Sowing

San Marzano · Tomato

Zone 9a Save Garden

Planting Schedule

Add San Marzano to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsJan 16th
Last FrostMar 6th
Transplant / Direct Sow OutdoorsMay 1st
Harvest BeginsJul 15th
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 10 days first.
TraitValue
Days to Maturity75
Sun RequirementsFull Sun
Growth HabitIndeterminate
Support NeededStake
Planting DepthDeep
Germination Temp (°F)75
Min Soil Temp (°F)60
Min Night Temp (°F)50
Harden Off (days)10
Expert Note: Start seeds indoors and transplant only once soil is consistently warm (60°F+) to prevent cold-stunting, then give plants steady watering for high-quality sauce fruit.