San Marzano

Tomato

75d to harvest

Sun-warmed and richly aromatic, San Marzano paste tomatoes ripen to a deep, velvety red with a firm, meaty interior and a pleasantly low-seed count. Their elongated, tapered shape holds its structure beautifully, delivering a dense, spoonable texture that’s ideal for thick sauces and slow-simmered favorites, as well as roasting for concentrated flavor. Grow these in cool-season confidence for a harvest that tastes unmistakably classic—bright, savory, and beautifully concentrated.

Crop Dates

Milestone	Date
Start Indoors	Mar 27th
Last Frost	May 15th
Transplant / Sow Outdoors	Jul 10th
Harvest Begins	Sep 23rd
Harvest Ends	Sep 1st

Crop Details

Trait	Value
Days to Maturity	75
Sun Requirements	Full Sun
Growth Habit	Indeterminate
Support Needed	Stake
Planting Depth	Deep
Germination Temp (°F)	75
Min Soil Temp (°F)	60
Min Night Temp (°F)	50
Harden Off (days)	10

Recommended Companions

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Frequently Asked Questions

How often should I water San Marzano tomatoes during the main growing phase?

During active flowering and fruit set, keep soil evenly moist by watering deeply about 1–2 times per week, aiming for consistent moisture rather than daily light watering. Water when the top 1 inch of soil feels dry, and apply enough to soak the root zone (roughly 6–12 inches). Mulch after plants are established to reduce swings in moisture that can trigger blossom-end rot and cracking.

How can I tell when San Marzano tomatoes are ready to harvest?

Harvest when fruits reach full red color (or deep red if grown for slightly firmer fruit) and feel firm but not hard—San Marzano should be elongated and heavy for its size. If you gently lift a ripe fruit, it should detach with minimal force from the vine. Plan harvests around day 75 from transplant (or roughly 70–80 days depending on conditions) and pick often to keep plants producing.