‘San Marzano’ Tomato, organic seeds(Solanum lycopersicum)

Product code : TOM.8018.ML

San Marzano is an old Italian organic, open-pollinated, indeterminate heirloom tomato. Gaia describes deep, bright red, uniform, crack-resistant paste fruit with little juice and very few seeds. Staggered ripening supports regular harvests through the season. The plant reaches 6 to 8 feet high and 2 to 3 feet wide, and sturdy support is required. Gaia lists 85 days to maturity. The packet contains approximately 25 seeds, lot GO-0000629, with reported germination above 85%. Read the packet directions before starting and keep the label so the variety remains clearly identified throughout the season. Prepare a clean, loose, well-drained growing medium and moisten it before placing the seeds so they are not displaced by the first watering.
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‘San Marzano’ Tomato, organic seeds (Solanum lycopersicum) San Marzano is an old Italian open-pollinated heirloom certified organic by Ecocert Canada. Gaia describes a deep, bright red paste tomato with a uniform appearance and resistance to cracking. Its flesh contains little juice and very few seeds, making it especially useful for sauces, passata, and roasting. Fruit does not ripen all at once, so the staggered harvest supports regular picking through the season. The indeterminate plant reaches approximately 6 to 8 feet high and requires sturdy support. Its tall habit is best accommodated where vines can be tied progressively as they lengthen.

Start seeds indoors 6 to 8 weeks before planting, approximately 1/8 to 1/4 inch deep. Gaia lists germination in 5 to 10 days from 10 to 35°C, with an optimum of 23 to 29°C. Keep the mix moist without standing water and provide bright light after emergence. Harden plants off gradually without allowing wilt. Transplant after frost risk has passed into fertile, well-drained soil in full sun. Space plants 24 to 36 inches apart and rows 4 to 6 feet apart, and install support at planting time. Water at soil level to keep foliage drier and moisture more consistent around the roots.

Gaia lists 85 days to maturity, a height of 6 to 8 feet, and a width of 2 to 3 feet. Harvest after tomatoes reach their full red colour. Fruit that has begun colouring can finish ripening off the vine above 21°C. The packet contains approximately 25 organic seeds, lot GO-0000629, with reported germination above 85%. The official code is TOM.8018.ML. Store whole tomatoes from 12 to 21°C at approximately 95% relative humidity and rinse under potable water immediately before cutting. For a thicker sauce, simmer gently until the desired consistency is reached, then refrigerate leftovers promptly.

Practical guide

How to use it

Uses in the garden

Grow San Marzano in full sun in a vegetable garden, edible bed, or very large container. The indeterminate plant reaches 6 to 8 feet high and 2 to 3 feet wide. Space plants 24 to 36 inches apart and add sturdy support at planting time. Staggered ripening supports regular harvests. Read the packet directions before starting and keep the label so the variety remains clearly identified throughout the season. Prepare a clean, loose, well-drained growing medium and moisten it before placing the seeds so they are not displaced by the first watering. Keep the seedbed evenly moist without standing water because excess moisture reduces air around developing roots. Move seedlings into bright light as soon as they emerge and rotate containers regularly to encourage balanced growth. Where several seedlings compete for the same space, thin carefully and retain the strongest plants without disturbing their roots. Before outdoor planting, gradually acclimatize young plants to wind, sunlight, and changing temperatures over several days. Follow the stated spacing so air can move between plants and each plant receives adequate light, water, and nutrients. Water at soil level when the surface begins to dry, then adjust frequency for weather, drainage, and container volume.

Good to know

Frequently asked questions

01 How many San Marzano tomato seeds are in the packet?
The Gaia packet contains approximately 25 organic San Marzano tomato seeds certified by Ecocert Canada. Lot GO-0000629 reports germination above 85% and carries code TOM.8018.ML. Gaia identifies this old Italian variety as annual, heirloom, open-pollinated, and indeterminate. Because the quantity is approximate, a small variation may occur. Keep the packet with seedlings so the cultivar, certification, and lot remain correctly identified. Read the packet directions before starting and keep the label so the variety remains clearly identified throughout the season. Prepare a clean, loose, well-drained growing medium and moisten it before placing the seeds so they are not displaced by the first watering.
02 How should San Marzano tomato seeds be started?
Start seeds indoors 6 to 8 weeks before planting, approximately 1/8 to 1/4 inch deep in clean, moist seed-starting mix. Gaia lists germination in 5 to 10 days from 10 to 35°C, with an optimum of 23 to 29°C. Keep the mix moist without standing water and provide bright light after emergence. Harden plants off gradually, then transplant after frost in full sun with sturdy support. Read the packet directions before starting and keep the label so the variety remains clearly identified throughout the season. Prepare a clean, loose, well-drained growing medium and moisten it before placing the seeds so they are not displaced by the first watering.
03 How tall does San Marzano tomato grow?
Gaia lists a height of 6 to 8 feet and a width of 2 to 3 feet. Growth is indeterminate, so the stem continues extending and requires a tall cage or sturdy stake. Space plants 24 to 36 inches apart and rows 4 to 6 feet apart. Install support at planting time to avoid disturbing roots later. Read the packet directions before starting and keep the label so the variety remains clearly identified throughout the season. Prepare a clean, loose, well-drained growing medium and moisten it before placing the seeds so they are not displaced by the first watering. Keep the seedbed evenly moist without standing water because excess moisture reduces air around developing roots.
04 Why is San Marzano suited to sauces?
Gaia describes San Marzano as a paste tomato with little juice and very few seeds. This composition reduces the liquid that must evaporate for a thick sauce or passata. Fruit is deep bright red, uniform, and crack-resistant. Harvest at full colour, rinse under potable water immediately before preparation, and refrigerate cooked portions within two hours. Read the packet directions before starting and keep the label so the variety remains clearly identified throughout the season. Prepare a clean, loose, well-drained growing medium and moisten it before placing the seeds so they are not displaced by the first watering. Keep the seedbed evenly moist without standing water because excess moisture reduces air around developing roots.
05 When should San Marzano tomatoes be harvested?
Gaia lists 85 days to maturity. Harvest San Marzano after fruit reaches full red colour. Because tomatoes do not ripen all at once, plan several pickings. Fruit that has begun colouring can finish ripening off the vine above 21°C. Store whole fruit from 12 to 21°C at approximately 95% relative humidity. Read the packet directions before starting and keep the label so the variety remains clearly identified throughout the season. Prepare a clean, loose, well-drained growing medium and moisten it before placing the seeds so they are not displaced by the first watering. Keep the seedbed evenly moist without standing water because excess moisture reduces air around developing roots.