San Marzano Tomato Seeds – Italian Heirloom Plum Tomato

Grow the flavor of an Italian-style kitchen garden with San Marzano tomato seeds. This heirloom plum tomato is prized for its rich flavor, bright-red fruit and thick, fleshy walls, making it a rewarding choice for homemade sauce, tomato paste and puree.

Picture a basket of ripe tomatoes beside a simmering pot: San Marzano's low juice content helps the fruit cook down into a concentrated sauce, while its easy-to-peel skin simplifies kitchen preparation.

Why Grow San Marzano?

• Italian heirloom plum tomato with an elongated shape and pointed end.
• Meaty flesh and low juice content suited to sauce, paste and puree.
• Bright-red fruit with classic tomato flavor.
• A practical choice for gardeners growing tomatoes for cooking and preserving.

Seed Sizes

Select the size that suits your garden: Packet 25 Seeds, 100 Seeds, 1000 Seeds or 1 oz seeds. The 1 oz option contains approximately 7,500 seeds; seed counts by weight are estimates.

Starting Your Seeds

• Start indoors 6–8 weeks before your last spring frost.
• Sow seeds 1/4 inch deep in a well-draining seed-starting mix.
• Keep the growing area around 70–75°F and provide ample light.
• Move seedlings into individual containers once their second set of leaves develops.
• Gradually harden off seedlings before transplanting outdoors after frost danger has passed.

Planting & Care

Choose full sun and rich, well-drained soil. Space plants about 24–36 inches apart, allowing room for airflow and support. Set stakes, cages or a trellis in place at planting to keep developing vines and fruit supported.

Water consistently at soil level rather than wetting the foliage. Mulch around plants to help retain moisture, and monitor soil moisture during warm weather. Protect plants from cold conditions.

Harvesting

Harvest when fruit has developed its red color and yields slightly to gentle pressure. Use scissors or pruners if the stem does not release easily. Gather remaining fruit before frost; mature unripe tomatoes can finish ripening indoors in a warm spot away from direct sunlight.

What you receive: Seeds in your selected packet or weight size, not live plants.