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Organic Italian ‘San Marzano’ tomato (<em>Solanum lycopersicum</em> ‘San Marzano’)

Indeterminate Italian paste tomato Solanaceae

Organic fruiting vegetable seeds

Organic Italian ‘San Marzano’ tomato

Name: Organic Italian ‘San Marzano’ tomato ( Solanum lycopersicum ‘San Marzano’)
Brand: Biologiquement vôtre
SKU: BIOV-SEMENCES
Price: 4.49 CAD
Availability: InStock

Solanum lycopersicum ‘San Marzano’

Product code : BIOVO-0151

Open-pollinated organic heirloom with elongated red dense-fleshed fruit and a small seed cavity, ideal for sauce.

Exposure: Full sun
Life cycle: Warm-season annual

Common nameSan Marzano Italian paste tomato

FamilySolanaceae

GenusSolanum

SpeciesSolanum lycopersicum

CultivarSan Marzano

TypeIndeterminate Italian paste tomato

Botanical nameSolanum lycopersicum ‘San Marzano’

Reproducible seedsYes

Heirloom varietyYes

Organic Italian ‘San Marzano’ tomato (Solanum lycopersicum ‘San Marzano’) is an open-pollinated heirloom paste tomato valued for elongated red fruit, dense flesh, and a small seed cavity. Its meaty texture and high solids shorten cooking time and create rich smooth sauces purées soups and braises. Fruit can also be roasted dried or eaten fresh. Maturity generally falls around 78–85 days after transplanting depending on selection and conditions.

Sow indoors six to eight weeks before last frost approximately 0.5 cm deep. Keep the mix warm and evenly moist, then provide intense light immediately after emergence. Pot up after true leaves and harden gradually. Transplant after frost in full sun into deep fertile organic-rich well-drained soil. The variety is generally described as indeterminate, so install a sturdy stake or tall cage at planting and tie stems as they extend.

Water deeply at soil level while maintaining even moisture, especially through fruit set and sizing. Mulch once soil warms, avoid excess nitrogen, and keep foliage airy. Harvest when fruit is uniformly red, firm with slight give. Promptly process harvests intended for sauce. For shelf-stable canning use a tested recipe specifying acidification jar size and heat processing. The cultivar name does not constitute Italian PDO certification.

Organic Italian ‘San Marzano’ tomato (Solanum lycopersicum ‘San Marzano’)

Sowing guide

It all startswith a seed.

Sowing depth

0.5 cm (1/4 in)

Spacing / density

Space plants approximately 90 to 120 cm (36 to 48 in) apart to accommodate growth and air circulation.

Germination temperature

21 to 27°C (70 to 81°F)

Germination time

7 to 14 days

Sowing period

March through April indoors then transplant after frost

Propagation

Seed

Growing method

Sow San Marzano indoors March through April six to eight weeks before last frost 0.5 cm deep. Maintain 21–27°C and even moisture until emergence in 7–14 days. Provide intense light, pot up after true leaves, and harden gradually. After frost transplant in full sun in the ground or a large deep container. Install a cage or stake, water at soil level, and mulch. Harvest frequently approximately 75 days after transplanting once small fruit is uniformly red.

Soil and care

The right care,at the right time.

Soil pH

Approximately 6.0 to 6.8

Care level

Moderate

Watering

Water deeply at soil level when the top three to five centimetres begin to dry while maintaining moisture as evenly as possible. Alternating drought and heavy watering encourages cracking and may contribute to blossom-end rot while constantly waterlogged soil suffocates roots and increases disease. Water in the morning without unnecessarily wetting foliage then mulch once soil warms. During fruit set and sizing avoid prolonged water stress. In a large container check moisture daily during hot weather without leaving standing water in the saucer.

Soil type

Choose deep fertile loose well-drained organic-rich soil with a slightly acidic to neutral pH near 6.0–6.8. Incorporate mature compost before transplanting while avoiding fresh manure and excess nitrogen that produces leaves at the expense of fruit. Work soil when neither sticky nor dusty and do not compact the root zone. Even moisture and adequate calcium reserves support healthy fruiting without automatic calcium additions unless testing supports them. Rotate three or four years away from tomatoes peppers eggplants and potatoes.

Fertilization

Incorporate mature compost before transplanting then base later feeding on a soil test or the label of a balanced fruiting-vegetable fertilizer. Avoid excess nitrogen which promotes very vigorous stems and leaves but delays flowering and ripening. After fruit set balanced nutrition including potassium and phosphorus may support fruiting without exceeding label rates. Never place concentrated fertilizer against roots and water after application. In containers split a dilute solution rather than using one strong dose. No calcium supplement replaces even watering or a test confirming deficiency.

Moisture

Consistent soil moisture without saturation; good air circulation around the foliage.

Seasonal care

In spring sow indoors six to eight weeks before last frost and provide intense light immediately after emergence. Pot up after true leaves then harden gradually. After frost transplant in full sun in the ground or a large deep container. Install a cage or stake to support loaded stems without assigning an unconfirmed growth type. In summer water deeply at soil level, check container moisture often, mulch, and feed moderately. Harvest red fruit frequently. Before frost pick developed fruit, remove plants, and clean containers.

Container growing

A garden,within reach.

Choose a very large stable deep container with several drainage holes; no exact dimension is confirmed for the Biologiquement vôtre seed lot. Fill with airy compost-enriched vegetable potting mix and place in full sun. Install a tall cage or sturdy stake at transplanting to support the indeterminate habit and clusters. Water slowly when the surface begins to dry without standing water. Mulch lightly, feed moderately, tie stems, and check moisture daily during hot weather.

Bloom and dimensions

Its place,in your garden.

Flower color

Yellow

Foliage color

Green

Foliage type

Compound, divided foliage with an aroma when bruised; grown as an annual in Quebec

Growth rate

Vigorous during the warm season

Growth habit

Indeterminate upright and vigorous

Bloom period

Small yellow flowers in successive clusters through the warm season

Fruiting

Clusters of elongated red meaty low-moisture fruit ripening progressively

Days to maturity

Approximately 78 to 85 days after transplanting

Harvest

Harvest generally 78–85 days after transplanting when fruit is uniformly red, firm, and slightly yielding. Support each fruit and detach it without pulling the stem. Pick regularly as clusters ripen. Promptly use fruit intended for sauce or purée. For shelf-stable canning follow a tested recipe specifying acidification jar size and processing time. Do not eat leaves or stems and discard mouldy slimy or abnormal-smelling fruit.

Garden associations

In goodcompany.

Companion plants

Basil and early lettuce can occupy nearby space when light, water, air circulation, and root room remain sufficient.

Plants to avoid

Avoid waterlogged soil, overhead watering, crowding, and repeated rotations with tomatoes, peppers, eggplants, or potatoes.

Recipe idea

From the gardento your plate.

Edible parts

Ripe fruit

San Marzano tomato sauce — Rinse sound fruit, remove stems, cut, and simmer with onion and herbs until thickened. Serve hot or cool rapidly, then refrigerate leftovers within two hours. This preparation is not a canning method. For shelf-stable sauce follow a tested recipe specifying acidification and heat processing. Discard mouldy slimy or abnormal-smelling fruit.

Frequently asked questions

Your questions,answered.

When should San Marzano be sown and transplanted in Quebec?

Sow indoors March through April approximately six to eight weeks before planned transplanting. Place seed 0.5 cm deep, maintain 21–27°C, and keep mix moist; emergence generally takes 7–14 days. Provide intense light, pot seedlings up, and harden gradually. Transplant only after last frost once soil is warm and nights are sufficiently mild.

When should San Marzano tomatoes be harvested?

Generally harvest around 75 to 85 days after transplanting once fruit has developed red colour and yields slightly to gentle pressure. A green area may remain at the shoulders and colour varies with sunlight. Support each fruit and cut the stem with a clean tool. Pick progressively, bring developed fruit indoors before frost, and discard mouldy slimy or deeply split fruit.

Can San Marzano be grown in a container?

Yes. The workbook indicates culture in a large deep container without confirming exact dimensions. Use a stable pot with several drainage holes and airy compost-enriched mix. Place in full sun, install a cage or stake for loaded stems, check moisture daily during hot weather, water until it drains without standing water, and feed moderately according to label directions.

Wildlife and pets

Life,around your plants.

Supporting wildlife

Yellow blossoms may be visited by bumblebees and other bees able to vibrate the anthers and release pollen. Wind also contributes substantially to pollination, although active insect visitors can support consistent fruit set in the vegetable garden throughout the flowering period.