San Marzano Nano

Tomato

Zone 5b Save Garden

Botanical illustration of San Marzano Nano

🌱 75d to harvest Determinate

Sun-warmed and richly aromatic, San Marzano Nano brings a dense, meaty sweetness with a classic tang—its flavor feels concentrate…

Crop Dates

Milestone	Date
Start Indoors	Mar 16th
Last Frost	May 4th
Transplant / Sow Outdoors	Jun 22nd
Harvest Begins	Sep 5th
Harvest Ends	Oct 5th

Crop Details

Trait	Value
Days to Maturity	75
Sun Requirements	Full Sun
Growth Habit	Determinate
Support Needed	Cage
Planting Depth	Deep
Germination Temp (°F)	75
Min Soil Temp (°F)	60
Min Night Temp (°F)	50
Harden Off (days)	8

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Frequently Asked Questions

What pest or disease is most common on Solanum lycopersicum (tomato) and how do I treat it in the home garden?

A frequent problem is early blight (Alternaria) showing as dark, concentric “target” spots on older leaves. Remove and discard the infected leaves, avoid overhead watering, and apply a labeled protective fungicide early in the season and after rainy/humid spells to prevent new spots from spreading.

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

During flowering and fruit set, keep soil consistently moist but not soggy—aim for about 1–2 inches of water per week total, adjusted for heat and container size. Water deeply at the base when the top 1 inch of soil dries, since irregular moisture can trigger blossom-end rot and fruit cracking.

How can I tell when Solanum lycopersicum “San Marzano Nano” is ready to harvest?

Harvest when fruits are fully colored (deep red), feel firm but not rock-hard, and have reached the variety’s typical size for a mature fruit. If nights are warm, expect harvest around ~75 days from transplanting and pick regularly to keep new fruit setting.

Sun-warmed and richly aromatic, San Marzano Nano brings a dense, meaty sweetness with a classic tang—its flavor feels concentrated, like a garden secret kept in miniature. The fruits are compact and elongated, with a smooth, firm texture and few seeds, making them ideal for thick, spoonable results and deep red color in every jar. Grow this 75-day paste tomato for abundant harvests that reward both fresh slicing and long-simmered favorites with a distinctly San Marzano character.

Sowing Tips

Transplant Conditions

Wait until soil reaches 60°F and nights stay above 50°F before moving outdoors. Harden off for 8 days first.

Expert Note

For the most paste intensity, transplant into warm soil (around 60°F+) and keep plants evenly watered while avoiding late nitrogen boosts.