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An image of the plant grown with seed for San Marzano Tomato Seeds - Succulent & Low Acid, Ideal for Rich Sauces, Non-GMO, Heirloom from Italy, Bush Type, Deep Red Fruit
  • An image of the plant grown with seed for San Marzano Tomato Seeds - Succulent & Low Acid, Ideal for Rich Sauces, Non-GMO, Heirloom from Italy, Bush Type, Deep Red Fruit
San Marzano Tomato Seeds - Succulent & Low Acid, Ideal for Rich Sauces, Non-GMO, Heirloom from Italy, Bush Type, Deep Red Fruit
$11.99 CAD
Maturity

80 Days
Sunlight

Full Sun
Watering

Regular

Difficulty

Medium difficulty
Life cycle

Annual
Grow Zones

9 - 11

Quick Reference

Zones

Plant Hardiness Zones describe the average minimum winter temperature for a region. They tell you where a plant can reliably survive outdoors. For example, Zone 5 can handle colder winters than Zone 9. Matching a plant to your zone increases the chance of long-term success.

Days

  • For food crops: Days to maturity is the expected number of days from planting to first harvest. This helps gardeners plan their growing season and time their harvests.
  • For non-food plants: Days to germination indicates how long it usually takes seeds to sprout under normal conditions. This is key for starting seeds successfully.

Types

  • F1 (Hybrid): A cross between two parent varieties. Hybrids are bred for vigor, uniformity, and specific traits such as disease resistance. Seeds saved from F1 plants don’t grow true to type. That means if you try to regrow them from seed, the plant won't necessarily be the same as last year's
  • OP (Open-Pollinated): Varieties that naturally pollinate and remain stable across generations. Seeds can be saved and replanted with consistent results.
  • HM (Heirloom): An open-pollinated variety that has been handed down for many generations. Heirlooms are valued for flavor, tradition, and genetic diversity.

Grows

  • Outdoors: Well-suited for garden beds, raised beds, or open soil, where natural conditions are stable.
  • Windowsill: Compact plants that thrive in containers indoors, often needing only modest light.
  • Anywhere: Highly adaptable plants that perform reliably in both indoor and outdoor settings.

Lifecycle

  • Annual: Grows, flowers, sets seed, and dies in one growing season. Many vegetables and flowers are annuals.
  • Perennial: Lives for multiple years, regrowing each season after going dormant. Often used in landscaping or long-term food crops.
  • Sp. Perennial (Self-Perennializing): A plant that reseeds itself or self-pollinates, giving the effect of perennial growth even if individual plants live shorter lives.

Size

Indicates the recommended container size or soil depth for best growth.

  • “X″ Pot”: The ideal pot diameter (e.g., 5″ Pot), ensuring enough root space.
  • DS (Deep Soil): Requires planting directly in the ground or in a deep raised bed, as shallow pots restrict growth.
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  • Attractive Features: Grow San Marzano tomatoes with elongated, cylindrical shape, meaty pulp, and vibrant deep red color.
  • Optimal Growth Conditions: Requires a consistent soil temperature of 75°F for germination, ideal with 14-16 hours of light per day post-sprouting.
  • Harvest Details: Prepare for transplant after reaching 5 inches in height with developed deep roots for robust growth and higher yield.
  • Culinary Star: Perfect for creating authentic Italian sauces thanks to its delicious sweet flavor, meaty texture, and lower acidity.
  • Resilient Plant: Thrives in well-drained soil and responds well to fertilizers like 10-52-17 and liquid seaweed to boost root strength.

San Marzano Tomato Seeds are the ultimate choice for creating authentic Italian sauces. These heirloom seeds produce low-acid, deep red fruits that are perfect for culinary enthusiasts.

Start your seeds indoors and transplant them to your garden for a rewarding experience. With regular feeding and full sun, enjoy a bountiful harvest of these classic, meaty tomatoes, ideal for rich, flavorful sauces.
Size
How much seed do I need?

Seeds per gram: 250
Average germination rate: 85%

Package sizes

  • 15 seeds — 13 plants — yields about 100–150 lb of fruit
  • 50 seeds — 43 plants — yields about 340–520 lb of fruit
  • 100 seeds — 85 plants — yields about 680–1,020 lb of fruit
  • 250 seeds — 213 plants — yields about 1,700–2,560 lb of fruit

Plant growth and coverage

  • Determinate, bushy habit; ideal for sauces and canning; staking or caging recommended
  • Height: 60–90 cm (24–36 in)
  • Spread: 45–60 cm (18–24 in)
  • Spacing: 45–60 cm (18–24 in) between plants; 90–120 cm (36–48 in) between rows

Choosing a packet size

  • A 15-seed packet is perfect for home gardeners growing a few plants in beds or large containers.
  • The 50-seed packet suits small to medium gardens, succession planting, or stocking up for a robust sauce harvest.
  • The 100-seed packet is great for community gardens or avid preservers planning multiple rows for canning.
  • The 250-seed packet is best for market growers and small farms aiming for bulk production of paste tomatoes.
GROWING INSTRUCTIONS

Start San Marzano tomato seeds indoors 6-8 weeks before the last frost. Sow seeds 1/4 inch deep in well-draining soil and maintain a temperature around 75°F. Ensure consistent moisture without overwatering.

Germination occurs in 6-10 days. Provide seedlings with 14-16 hours of light daily. Once seedlings reach about 5 inches, transplant them into 3-inch peat pots to encourage robust root growth. Harden off seedlings by gradually exposing them to outdoor conditions.

Transplant outdoors when nighttime temperatures are warm. Plant in full sun with rich, well-drained soil. Regular feeding with a 10-52-17 fertilizer and liquid seaweed boosts growth. Harvest when tomatoes are deep red for optimal flavor.
SHIPPING & RETURNS

In Canada, we use fast shipping from our Canadian warehouses. You can expect delivery in 1-3 days.

In the USA, We use our US warehouses, and you can expect your order in 1-3 days, too.

No postaged lettermail or slow shipping from across the world. No customs fees or orders withheld at the border. Tracking numbers for all orders.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible. Our return policy covers you for late, damaged or defective products.

 Read Our Shipping & Returns Policy

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