Yellow Belgium tomatoes, whole and halved, with a handful of seeds

Yellow Belgium tomatoes ripening in a cluster on the vine, orange-yellow fruit among the foliage

Three round, orange-yellow Yellow Belgium tomatoes on a pale board, one of them cut in half

Yellow Belgium Tomato Seeds

Name: Yellow Belgium Tomato Seeds
Brand: Kokopelli
SKU: P6623
Price: 3.9 EUR
Availability: InStock

3,90 €

A very old variety with large, round, orange-yellow fruits, Yellow Belgium produces tomatoes of 150 to 300 g with dense, juicy, sweet flesh, best eaten raw in thick slices.

The packet contains 35 organic, open-pollinated seeds. Its indeterminate growth habit calls for sturdy staking from the moment it is planted out.

Ref. P6623·Vegetable seeds

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The summary

What you receive: a packet of 35 organic, open-pollinated Yellow Belgium tomato seeds.
The fruit: round, orange-yellow, 150 to 300 g, with dense, juicy, sweet flesh.
Sowing: from February to April under cover, at 16 to 20 °C, 5 weeks before planting out.
Harvest: from July to October, when the flesh gives under your thumb.
How much effort: sturdy staking, for an indeterminate variety.
How to choose: this one for the large yellow fruit, Jupiter for the red.

Heirloom tomato with large round yellow-orange fruits, 35 farmers' seeds

The "Yellow Belgium" yellow tomato seeds from the Kokopelli association come in a packet of 35 organic, open-pollinated seeds. This heirloom variety produces round, yellow-orange fruits of 150 to 300 g, with dense, juicy, sweet flesh, mainly intended to be eaten raw. Its indeterminate growth habit calls for solid staking from the moment it is planted out.

Yellow Belgium is a very old large-fruited tomato with round, orange-yellow fruits weighing 150 to 300 g. The fruits contain few seeds, and their dense, juicy flesh has a mild, slightly sweet flavour. Sliced, its orange-yellow flesh stands out from the red of the other tomatoes in your basket.

The variety comes from the United States, where it is said to descend from Giant Belgium, a pink-fruited tomato selected in Ohio. It crops mid-season, from July to October depending on the sowing date, and its growth is indeterminate: the stem keeps lengthening until the first frosts, so you need a stake or a string from the moment it is planted out. It can be grown in open ground or under glass, in full sun, in free-draining, rich, warmed soil.

⚖️ The weight of the fruit

A 300 g fruit exerts leverage on the truss that carries it, so that a string that is too thin cuts through the stem and a stake that has not been driven in firmly tips over under the load. So plan for solid support from the moment of transplanting, train the plant on one or two stems, and support the fruits of your first trusses individually. This training is decided before planting, because a stake added in June passes through roots that are already established.

🍽️ Raw, in thick slices

Its sweetness and dense flesh make it best suited to raw cooking, which shows off its colour on your plate. It is sliced thickly, served with olive oil and salt, and pairs with a red tomato such as Jupiter for a two-tone plate. Cooked, it gives golden sauces, but its juicy flesh needs longer reduction than a preserving tomato.

In salads

Serve it in thick slices, with olive oil and salt. Its sweetness speaks for itself.

As carpaccio

Alternate its slices with a red tomato, for a contrast of colour.

As a sauce

It gives a golden sauce, which needs reducing for longer than a tinned tomato.

Tie up large fruits in a single movement

A Yellow Belgium plant is tied to its stake every week, as the stem lengthens and the trusses fill out. The plant tying machine wraps a tape around the stem and the stake, staples it and cuts it with a single squeeze of the hand. You keep your other hand free to hold a stem weighed down with 300 g fruits, and each tie goes on in a few seconds along the whole row.

💧 In a greenhouse and in aquaponics

Under a closed shelter, neither wind nor insects release the pollen, and the flowers drop without setting fruit. Vibrate the flower stem with your fingertip every day, or press the back of an electric toothbrush against the stem for a few seconds around midday, as described in the guide on how to pollinate your plants indoors. In your aquaponic system, a large-sized plant needs a system that has been running for at least 2 to 3 months, a pH of 6.4 to 7.5 and a media bed deep enough for its roots. In a younger system, the foliage turns yellow and the plant stalls, and the guide to plant deficiencies in aquaponics helps you identify the missing element.

Technical specifications

The sachet

Capacity: 35 seedsEnough to plant around ten specimens, including germination losses.
Seed origin: Kokopelli associationOrganic seeds, royalty-free.
Seed type: Open-pollinated, non-hybridReproducible: seed from your own harvest will give the same variety.
Seed storage: About 4 yearsStore in a dry, cool, dark place.

The variety

Botanical name: Solanum lycopersicum
Fruit shape: Round, few seeds
Fruit weight: 150 to 300 g
Colour at maturity: Orange-yellowPick when the flesh gives slightly under your thumb.
Growth: IndeterminateStake or training twine from the moment of planting out.
Earliness: Mid-season

Seedling and harvest

Seedlings under cover: February to AprilIn small pots, under a well-lit shelter.
Germination temperature: 16 to 20 °C
Germination time: 6 to 10 days
Time in the nursery: 5 weeks
Installation: After the last frostsWhole root ball, stem buried up to the first leaves, at least 50 cm between plants.
Harvest period: July to October

To budget for separately

Reinforced training: Doubled string or a sturdy stake
Growing medium: Clay pebbles or coir

10 further specifications are available in the detailed view.

In the box

1 packet of 35 organic Yellow Belgium tomato seeds

Quantity, fruit, origin and sowing: sheet from the seed company Kokopelli (ref. P6623), recorded on 11/10/2026. Germination time, harvest period and storage are guidelines for mainland France.

Manufacturer and product safety

Manufacturer: Association Kokopelli (SIREN 433481124, TVA FR80433481124)
Postal address: 7 route de Sabarat, Forêt de Castagnès, 09290 Le Mas-d'Azil, France
Contact: Formulaire de contact : https://kokopelli-semences.fr/fr/faq/ (aucune adresse e-mail publique) ; téléphone 05 61 67 69 87
Website: kokopelli-semences.fr

Information provided under Regulation (EU) 2023/988 on general product safety.

Compare the four varieties

Four farmhouse tomatoes, in the same packet format. What changes is the size of the fruit, its colour and what you will do with it in the kitchen.

Four heirloom tomatoes, from large beefsteak to cherry A large fruit for slicing isn't grown like a cluster of cherry tomatoes. Start from what you want on your plate.

	Red Tomato Seeds "Jupiter"Your choice	Recommended Yellow Belgium Tomato SeedsYour choice	Grappoli Corbarino Cherry Tomato SeedsYour choice	Yellow Plum Cherry Tomato SeedsYour choice
The fruit
Size	Medium to large, 80 to 230 g	Large, 150 to 300 g	Cherry type, in clusters of 7 to 10	Cherry, 20 to 30 g
Colour at maturity	Red	Orange-yellow	Dark red	Lemon yellow
Shape	Round, slightly flattened	Round	As a plum	As a plum
Best use	Sauces and preserves	Slices and carpaccios	Drying and jarring	Nibbles and salads
The growing
Earliness	Mid-season	Mid-season	Early	Mid-season
Growth	Indeterminate	Indeterminate	Indeterminate	Indeterminate
Variety origin	France	United States	Italy	United States
The sachet
Seeds per packet	35	35	35	35
Open-pollinated seeds	Yes	Yes	Yes	Yes

Red Tomato Seeds "Jupiter"

The fruit

SizeMedium to large, 80 to 230 g

Colour at maturityRed

ShapeRound, slightly flattened

Best useSauces and preserves

The growing

EarlinessMid-season

GrowthIndeterminate

Variety originFrance

The sachet

Seeds per packet35

Open-pollinated seedsYes

Yellow Belgium Tomato SeedsRecommended

The fruit

SizeLarge, 150 to 300 g

Colour at maturityOrange-yellow

ShapeRound

Best useSlices and carpaccios

The growing

EarlinessMid-season

GrowthIndeterminate

Variety originUnited States

The sachet

Seeds per packet35

Open-pollinated seedsYes

Grappoli Corbarino Cherry Tomato Seeds

The fruit

SizeCherry type, in clusters of 7 to 10

Colour at maturityDark red

ShapeAs a plum

Best useDrying and jarring

The growing

EarlinessEarly

GrowthIndeterminate

Variety originItaly

The sachet

Seeds per packet35

Open-pollinated seedsYes

Yellow Plum Cherry Tomato Seeds

The fruit

SizeCherry, 20 to 30 g

Colour at maturityLemon yellow

ShapeAs a plum

Best useNibbles and salads

The growing

EarlinessMid-season

GrowthIndeterminate

Variety originUnited States

The sachet

Seeds per packet35

Open-pollinated seedsYes

Size, colour, shape, earliness and seed count: data sheets from the seed company Kokopelli, recorded on 11/10/2026.

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delivery time

A packet of seeds ships as a small parcel. It can be grouped at no extra cost with the rest of your order, and the exact amount is calculated at checkout.

Frequently asked questions

6 questions

6 key questions

Can an ordinary plant carry a 300 g fruit?

Why do my flowers drop without setting fruit in a greenhouse?

How can you tell when a yellow tomato is ripe?

How long is it from sowing to the first tomato?

Should the suckers be pruned on this variety?

What becomes of a Yellow Belgium in a young aquaponic system?

Growing calendar

Reference points for mainland France, to be shifted by approximately two weeks depending on your region.

Stage
Seedlings under cover3 months	Seedlings under cover: no	Seedlings under cover in February	Seedlings under cover in March	Seedlings under cover in April	Seedlings under cover: no	Seedlings under cover: no	Seedlings under cover: no	Seedlings under cover: no	Seedlings under cover: no	Seedlings under cover: no	Seedlings under cover: no	Seedlings under cover: no
Transplanting2 months	Transplanting: no	Transplanting: no	Transplanting: no	Transplanting: no	Transplanting in May	Transplanting in June	Transplanting: no	Transplanting: no	Transplanting: no	Transplanting: no	Transplanting: no	Transplanting: no
Hand pollination2 months	Hand pollination: no	Hand pollination: no	Hand pollination: no	Hand pollination: no	Hand pollination: no	Hand pollination in June	Hand pollination in July	Hand pollination: no	Hand pollination: no	Hand pollination: no	Hand pollination: no	Hand pollination: no
Harvest4 months	Harvest: no	Harvest: no	Harvest: no	Harvest: no	Harvest: no	Harvest: no	Harvest in July	Harvest in August	Harvest in September	Harvest in October	Harvest: no	Harvest: no

KeySeedlings under coverTransplantingHand pollinationHarvest

This month October

Growing guidance

Germination temperature: 16 to 20 °C
Germination time: 6 to 10 days
Time in the nursery: 5 weeks
Spacing: At least 50 cmBetween two plants, in the row as well as in the grow bed
Fruit weight: 150 to 300 g
Fruit shape: Round, orange-yellow
Growth: IndeterminateStaked from planting out
Harvest period: July to October
pH in aquaponics: 6.4 to 7A compromise between fish, bacteria and plants
Seed storage: About 4 yearsDry and away from light

What you need to know

Double up the training twine as soon as you transplant. A 300 g fruit acts as a lever on the truss that carries it, and a thin tie cuts into the stem before the end of summer.
Train the plant on one or two stems and pinch out the side shoots every week. A large-fruited variety that keeps all its shoots spreads its vigour over too many fruits.
Support the fruits of the first two trusses individually, with a net or a strip of cloth. These are the heaviest on a still-young plant.
Under a closed shelter, the flower does not set fruit on its own. A daily vibration of the flower stem with your fingertip replaces the missing wind and insects.
Do not rely on colour alone when picking. On a yellow-orange variety, the eye is easily fooled: rely on flesh that gives slightly under your thumb.
In aquaponics, a large-fruited variety is one of the most demanding crops in nitrogen, potassium and calcium. Wait until the system has been running for 2 to 3 months before installing it.

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Yellow Belgium Tomato Seeds

The summary