Description
San Marzano Tomato Seeds grow the legendary Italian heirloom paste tomato prized by gardeners and cooks for sauce, canning, and cooking. Vigorous indeterminate vines produce elongated deep red 4-5 in. fruits with thick flesh, very few seeds, a rich slightly sweet flavor, and low acidity for classic pasta sauce, pizza sauce, and preserved tomato harvests.
Why Grow It
- Classic Italian heirloom paste tomato for sauces, canning, cooking, and homemade pizza.
- Elongated 4-5 in. deep red fruits have thick flesh, few seeds, and rich slightly sweet low-acid flavor.
- Vigorous indeterminate vines yield heavily through the season and can grow over 6 ft. tall with support.
- Open-pollinated heirloom variety suitable for seed saving when isolated from other tomatoes.
- Includes approx. 30 Non-GMO seeds.
Growing Information
| Botanical name | Solanum lycopersicum |
|---|---|
| Life cycle | Warm-season annual heirloom vegetable |
| Mature height | Indeterminate vines can reach over 6 ft. tall with support |
| Light | Full sun |
| Bloom or harvest window | Deep red paste tomatoes ripen about 80-90 days from transplant |
| Seed count | Approx. 30 Non-GMO open-pollinated heirloom seeds |
| Fruit color | Elongated deep red plum tomatoes with thick flesh and very few seeds |
| Sowing advice | Start indoors 6-8 weeks before the last frost. Sow 1/4 in. deep in warm seed-starting mix, keep evenly moist, and transplant outdoors after frost when soil has warmed. |
| Spacing | 24-36 in. apart, with sturdy stakes, cages, or trellis support for indeterminate vines |
| Germination | 5-10 days at 70-80 F in warm, evenly moist seed-starting mix |
Best For
- Italian sauce gardens
- paste tomatoes
- canning and preserving
- homemade pizza sauce
- fresh salads
- sandwich slices
- open-pollinated seed saving
Packet Details
Includes approx. 30 Non-GMO open-pollinated heirloom seeds. Store seeds cool, dry, and dark until sowing. Provide full sun, rich well-drained soil, regular water, and strong support for the best harvest.
FAQ
Is San Marzano best for sauce?
Yes. Its thick flesh, few seeds, easy-peeling skin, and rich flavor make it one of the classic paste tomatoes for sauce, canning, and cooking.
Do San Marzano tomatoes need support?
Yes. These are vigorous indeterminate vines that can reach over 6 ft. tall, so use sturdy stakes, cages, or a trellis.
When should I start the seeds?
Start indoors 6-8 weeks before your last frost, then transplant outdoors after frost when nights are warm and the soil has heated.
Can I save seeds from this variety?
Yes. San Marzano is open-pollinated, so gardeners can save seed from ripe fruit when plants are isolated from other tomato varieties.









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