

Tomato Costoluto (Organic)
Seed Information
- Plant Type Vegetable / Fruit
- Organic Yes
- Growing Difficulty Easy to Moderate
- Germination Time 7-14 Days
- Harvest Time 75-85 Days
- Best Season To Grow Late Winter to Spring
- SunLight Needs Full Sun
- Water Requirements Medium to High
- Height Of Maturity 150-180 CM
- None GMO Yes
- UK Native No
Tomato Costoluto is a striking and flavourful indeterminate (cordon) variety originating from Italy. It produces large, ribbed, beefsteak-style fruits with a deep red hue and a rich, complex flavour that intensifies when cooked. These tomatoes are ideal for traditional pasta sauces, soups, and slow cooking, but also shine when sliced fresh with olive oil and herbs.
This vigorous plant performs best in a sunny, sheltered location or greenhouse, with regular pruning and staking. Its ornamental fruits and authentic flavour make it a favourite among gourmet growers and heritage tomato enthusiasts.
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Type: Indeterminate (cordon)
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Fruit Size: Large, heavily ribbed
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Flavour Profile: Rich, tangy, and meaty
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Harvest Window: August–October
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Sow Indoors: February to April
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Plant Outdoors: After last frost
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Best For: Sauces, roasting, slicing
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Certified Organic Seeds
A showstopper in both the garden and the kitchen, Tomato Costoluto adds a touch of rustic Italian charm to your organic growing season.
Growing & Care Instructions
A Rich, Ribbed Heirloom for Home or School Gardens
Grow classic Italian tomatoes with our Organic Tomato Costoluto Starter Kit. Known for their beautifully ribbed shape and deep flavour, these tomatoes are perfect for sauces, salads, and sunny garden spaces.
🧺 What’s Inside Your Kit:
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Biodegradable Pot – For easy sowing and eco-friendly planting
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Reusable Decorative Pot – For transplanting and long-term growth
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2 Organic Tomato Costoluto Seeds – Non-GMO and full of traditional flavour
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Peat-Free Cutting Compost – Encourages strong root development
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Fish, Blood & Bone Feed – Organic slow-release nutrients
Biodegradable Pot – For easy sowing and eco-friendly planting
Reusable Decorative Pot – For transplanting and long-term growth
2 Organic Tomato Costoluto Seeds – Non-GMO and full of traditional flavour
Peat-Free Cutting Compost – Encourages strong root development
Fish, Blood & Bone Feed – Organic slow-release nutrients
🌿 Growing & Care Guide
1. Sow Indoors (Best Feb–Apr)
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Fill the biodegradable pot with compost.
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Plant one seed about 0.5cm deep in each pot.
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Water gently and place in a warm, bright spot (18–21°C).
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Keep compost moist but not soggy.
Fill the biodegradable pot with compost.
Plant one seed about 0.5cm deep in each pot.
Water gently and place in a warm, bright spot (18–21°C).
Keep compost moist but not soggy.
2. Germination
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Seeds usually sprout in 7–14 days.
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Once seedlings are 10–15cm tall with true leaves, they’re ready to transplant.
Seeds usually sprout in 7–14 days.
Once seedlings are 10–15cm tall with true leaves, they’re ready to transplant.
3. Transplanting
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Fill the reusable pot with compost.
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Either place the biodegradable pot directly inside or transplant deeper (up to first leaves) to encourage strong roots.
Fill the reusable pot with compost.
Either place the biodegradable pot directly inside or transplant deeper (up to first leaves) to encourage strong roots.
4. Feeding
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Apply fish, blood & bone feed every 3–4 weeks.
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Water well after feeding to activate nutrients.
Apply fish, blood & bone feed every 3–4 weeks.
Water well after feeding to activate nutrients.
5. Supporting
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Use a cane or tomato cage to support the plant.
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Tie gently with twine as it grows.
Use a cane or tomato cage to support the plant.
Tie gently with twine as it grows.
6. Flowering & Fruiting
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Expect rich red, ribbed fruit in mid to late summer.
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Water consistently and harvest when fruits are fully coloured and slightly soft.
Expect rich red, ribbed fruit in mid to late summer.
Water consistently and harvest when fruits are fully coloured and slightly soft.
From seed to sauce — enjoy growing gourmet heirloom tomatoes in your own garden.