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San Marzano Tomato Seeds for Planting – Heirloom Quality for Rich Flavorful Harvest

San Marzano Tomato Seeds for Planting – Heirloom Quality for Rich Flavorful Harvest

$16.89 USD
$16.89 USD
Sale Sold out

How to Sow and Plant

Start seeds indoors 6–8 weeks before last frost.
Sow seeds ¼ inch (6–12 mm) deep in moist soil.
Keep soil warm (70–80°F / 20–27°C) for germination.
Transplant outdoors after all frost risk passes.
Space plants 18–24" (45–60 cm) apart

How to Grow

Provide full sun (6–8+ hours daily).
Use well‑drained, fertile soil (pH ~6.0–6.8).
Water consistently; avoid waterloggin
Stake/cage vines to support growth.
Apply balanced fertilizer every few weeks.


Prune lower leaves and suckers for airflow

Tips

Mulch to retain soil moisture.
Harvest when fruit are deep red and firm.
Monitor for pests & diseases; use organic controls.

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About
Product Information
Features
life-cycle

Life Cycle

Annual

plant-characteristics

Plant Characteristics

plum tomato

growth-habit

Growth Habit

Indeterminate

bloom-season

Bloom Season

Spring

flavour-profile

Flavour Profile

sweet

suitable-for

Suitable for

Outdoor

About
San Marzano Tomato Seeds for Planting – Heirloom Quality for Rich Flavorful Harvest
seed-type

Seed Type

Non‑GMO

plant-type

Plant Type

Vegetable

San Marzano Tomato Seeds produce classic Italian plum tomatoes prized for their rich, sweet flavor and meaty texture. This heirloom variety is excellent for sauces, pastes, canning, and fresh eating. Indeterminate vines yield abundant harvests throughout the season when grown in full sun and fertile, well‑drained soil.

Planting information
planting-season

Planting Season

Spring

fruit-size

Fruit Size

3–5

plant-height

Plant Height

48–72

light-requiremen

Light Requiremen

Full sun

water-needs

Water Needs

Moderate

hardiness-zones

Hardiness Zones

3–10

container-garden

Container Garden

Yes

plant-spacing

Plant Spacing

18–24 in

planting-depth

Planting Depth

¼ in

growing-conditions

Growing Conditions

Warm

Coverage
Seed Count
Recommended Coverage
Seed Count
100
GTN
036000150810

Frequently Asked Questions

Why does San Marzano tomato need staking?

Its indeterminate vines continue growing and benefit from a cage, trellis, or stake for support.

What makes San Marzano tomatoes useful for sauces?

Their elongated plum shape and meaty texture make them well suited to sauces and paste-style preparations.

Can San Marzano tomatoes be grown in containers?

Yes. The product specifications list container growing as suitable when adequate space and support are provided.

How can airflow be improved around San Marzano plants?

Pruning lower leaves and selected suckers can improve airflow around the plant when done carefully.

What indicates that San Marzano tomatoes are ready to harvest?

The product page recommends harvesting when the fruits are deep red and firm.

Why are San Marzano tomatoes called indeterminate?

Indeterminate plants continue producing new stems and fruit over an extended growing period.