San Marzano Tomato Seeds

vibrant fleshy vegetable san marzano tomato seeds for sale
how to grow the best san marzano tomato plants

San Marzano Tomato Seeds

Regular price $3.49
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San Marzano Tomato Seeds | Product Features

  • High-quality San Marzano Tomato Seeds for planting.
  • Determinate variety great for canning or eating fresh.
  • Thick-walled tomato perfect for sauces, spreads and paste.
  • High yields of beautiful, bright red tomatoes with a sweet strong tomatoey taste.
  • Large, premium seed packets give instructions on how to grow and when to plant outdoors.
  • Seed packet contains 100 mg of Non-GMO, Heirloom seeds (about 45 seeds).

San Marzano is a famous sauce tomato (Solanum lycopersicum) long cultivated in Italy. Small seed cavities with thick, dense meaty flesh helps this tomato cook quickly into a rich tomato sauce. Large plants are disease resistant and produce an abundance of 5-6 ounce fruits.

Home-grown heirloom tomatoes have so much more flavor than supermarket hybrid varieties. Mix with fresh mozzarella and basil for a summertime salad or bruschetta, make fresh pico, a tomato tart, smoky and spicy tomato jam, or preserve them (dried or canned).

Start indoors 10-12 weeks before setting outside. Keep growing medium between 70-80°; tomatoes love heat. When first true leaves emerge, transplant the seedling into a larger container, burying the seedling deeply to encourage strong roots. Harden off plants and transplant outdoors into fertile, well-drained soil.

San Marzano Tomato Seeds Growing Details
Botanical Name Solanum lycopersicum
Plant Spacing 36”
Planting Depth 1/4”
Spread 2-3’
Height 6-8’
Germination Temp 70-80 °F
Light Required Full Sun
Life Cycle Annual
Days to Germination 5-10 Days
Days to Maturity 85-90 days
Planting Zone 3-9
Flower Form Yellow Star
Yield High
Growth Rate Moderate
Growing Season Spring - Fall
Harvest Season Summer - Fall

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  • Sustainably produced
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  • Non-GMO heirloom seeds
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Frequently Asked Questions

Determinate tomato plants grow into bushes of a fixed size. These plants produce most of their fruit all at once and have a short window for harvesting, usually about two weeks.

Indeterminate tomatoes grow into vines and need more support. These tomatoes have fruit that sets throughout the growing season. Vining tomatoes need more pruning and maintenance throughout the season because the vines will continuously grow and can reach heights of 6-8 feet.

Determinate tomatoes, such as San Marzano, need minimal pruning.
Gardeners may choose to lightly prune their plants to improve air circulation, remove excess foliage, and keep fruit from hanging low to the ground. However, determinate plants generally do not require pruning since they will not grow beyond their predetermined size.

Yes, tomatoes need trellising or a tomato cage to grow and keep their fruit off the ground. This allows for better airflow for the plant and helps prevent diseases. Fruit that is touching the ground will become misshapen, rot faster and is more susceptible to pests. It also can help with weed control, watering, and fertilizing.

Select a fully ripe tomato. Scoop the seeds and surrounding pulp into a container, add water, and allow it to ferment for a few days. Seeds that will be viable for planting will sink to the bottom. Skim off the floaters and gel on the top of the water. Then, rinse the remaining seeds thoroughly, removing all pulp and debris. Allow the seeds to dry completely before storing.

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