San Marzano (Determinate), Heirloom Tomato Seeds

San Marzano (Determinate), Heirloom Tomato Seeds — The Legendary Italian Paste Tomato

San Marzano is not just a tomato — it is a culinary standard. The paste tomato that Italian chefs have demanded for generations, San Marzano produces bright-red, slim, 3–4 inch fruits with a distinctive pointed end, heavy walls, and remarkably little juice or seeds. The result is a tomato that cooks down into a rich, thick sauce with a flavor that is stronger, sweeter, and less acidic than any Roma — the reason San Marzano has become the benchmark for serious sauce makers worldwide.

This determinate strain ripens in a concentrated set, making it ideal for gardeners who want to process a large batch at once. Excellent for sun drying, and holds well on the vine or in storage.

Why Grow San Marzano (Determinate)?

• The legendary Italian paste tomato — the benchmark for sauce makers worldwide
• 3–4 inch slim fruits — heavy walls, minimal juice and seeds
• Richer, sweeter, less acidic than Roma — superior sauce flavor
• Excellent for sun drying — holds well on vine and in storage
• Determinate — concentrated ripening ideal for processing
• Open-pollinated heirloom — save seed year after year

Growing Notes

Start indoors 6–8 weeks before last frost. Sow seeds ¼ inch deep in fertile, well-draining soil. Transplant outdoors after all frost danger has passed, spacing plants 18–24 inches apart in full sun. Water consistently. Harvest when fruits are fully red and firm.

Days to maturity: 70–90 days
Packet size: ~25+ seeds
Type: Heirloom, Open-Pollinated, Determinate
Fruit size: 3–4 inches
Spacing: 18–24 inches
Origin: Italy / USA-grown seeds
Sun: Full sun
USDA Zones: 3–12