Truss of Prune Jaune cherry tomatoes with elongated lemon-yellow fruits, with a small pile of seeds beside it

Cluster of Prune Jaune cherry tomatoes, plum-shaped, on the plant among the foliage

Lemon-yellow, plum-shaped Prune Jaune cherry tomatoes, in trusses and loose, on a pale board

Yellow Plum Cherry Tomato Seeds

Name: Yellow Plum Cherry Tomato Seeds
Brand: Kokopelli
SKU: P6620
Price: 3.9 EUR
Availability: InStock

3,90 €

A very old cherry tomato, Prune Jaune bears, until the frosts, trusses of 7 to 10 fruits, lemon yellow and plum-shaped, weighing 20 to 30 g, with a sweet flavour and no acidity.

The packet contains 35 seeds, organic and open-pollinated. This mid-season variety is sown from February to April and planted at least 50 cm from its neighbour.

Ref. P6620·Vegetable seeds

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The summary

What you receive: a packet of 35 organic, open-pollinated seeds of Prune Jaune cherry tomato.
The fruit: plum-shaped, lemon yellow, 20 to 30 g, sweet and without acidity.
Sowing: from February to April under cover, at 16 to 20 °C, 5 weeks before planting out.
Harvest: in trusses of 7 to 10 fruits, from summer until the first frosts.
In aquaponics: monitor potassium, calcium and iron, on a system that is 2 to 3 months old.
How to choose: this one for the yellow cherry, the Corbarino for the red.

Lemon yellow heirloom cherry tomato, in clusters, 35 farmers' seeds

Prune Jaune cherry tomato seeds, from the Kokopelli Association, are a heritage variety, lemon yellow and plum-shaped, and the packet contains 35 organic, open-pollinated seeds. Until the first frosts it produces clusters of 7 to 10 fruits of 20 to 30 g, with a sweet, low-acid flavour. It is sown from February to April, under cover, at 16 to 20 °C.

Prune Jaune is a very old cherry tomato that bears, right up to the first frosts, an abundance of trusses of 7 to 10 lemon-yellow, plum-shaped fruits. Each fruit measures 2 to 4 cm and weighs 20 to 30 g; its fleshy, juicy flesh has a mild, sweet flavour with no acidity, and is eaten whole, without a knife.

📜 A variety from 1877

This tomato comes from the United States, where it appears as early as 1877 in the catalogue of the seedsman Gregory, in Massachusetts. It is a mid-season variety with indeterminate growth: the stem keeps lengthening until the first cold weather and forms new trusses for as long as the season allows, which means you need a stake or training string as soon as it is planted out. It can be grown in open ground or in a greenhouse, in full sun, in a well-drained, rich, warm soil, with moderate water needs.

🌱 From seedling pot to cluster

Sow seeds in small pots from February to April, at 16 to 20 °C under a bright shelter, and germination takes 6 to 10 days. About 5 weeks later, plant out the whole root ball after the last frosts, burying the stem up to the first leaves, since the buried part produces roots and anchors the plant better. Allow at least 50 cm between plants, because the plant fills out all summer, and lay a mulch to keep the soil evenly moist.

Sow

Sow in pots from February to April, at 16 to 20 °C, in a bright, sheltered spot.

Planting

Plant the root ball after the frosts, at least 50 cm apart, with the stake put in the same day.

Pick

Pick the fruits once they have turned lemon yellow, until the first frosts.

Measure the potassium before the clusters flower

In an aquaponic system, fish feed supplies little potassium, yet it is the element that determines the size and flavour of the fruits. The potassium drop test gives you the potassium content of the water in mg/L before you decide on an addition. You then know whether the summer trusses have what they need, rather than adding a fertiliser with nothing to go by.

Regular watering to prevent blossom end rot

A dry, brown patch at the tip of the fruit, opposite the stalk, is the sign of blossom end rot. It is a physiological disorder rather than a disease: it appears after erratic watering, water or heat stress, too much nitrogen or a pH that is too low. So water at regular intervals rather than heavily all at once, and keep the mulch in place all summer.

💧 The Yellow Plum in aquaponics

A cherry tomato grows well in an aquaponic system, provided the system has been running for 2 to 3 months and the pH of the water stays between 6.4 and 7.5. Your fish water is often short of three elements that a fruiting plant needs, potassium, calcium and iron, and a variety that carries so many trusses uses them up all summer. At flowering, the inputs shift from nitrogen towards potassium and phosphorus, as explained in the guide to growing tomatoes in aquaponics, and the guide to plant deficiencies in aquaponics helps you read the leaves.

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
Variety origin: United StatesListed in a seed catalogue as early as 1877.
Fruit: Cherry to plum size, 2 to 4 cmIn clusters of 7 to 10 fruits.
Fruit weight: 20 to 30 g
Colour at maturity: Lemon yellowMild, sweet flavour, with no acidity.
Earliness: Mid-seasonIndeterminate growth, cropping until the first frosts.

Seedling and harvest

Seedlings under cover: February to AprilIn a small pot, 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

Stake or string: Trellising put in place from the start
Growing medium: Clay pebbles or coir

10 further specifications are available in the detailed view.

In the box

1 packet of 35 Prune Jaune cherry tomato seeds, from organic farming

Pack size, fruit, origin, earliness and sowing: data sheet from the seed supplier Kokopelli (ref. P6620), taken 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.

Two red, two yellow, two sizes The four tomatoes differ by fruit colour and size. Two answers are enough to identify yours.

	Red Tomato Seeds "Jupiter"Your choice	Yellow Belgium Tomato SeedsYour choice	Grappoli Corbarino Cherry Tomato SeedsYour choice	Recommended 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 Seeds

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 SeedsRecommended

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.

Estimate your
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

What do the fruits of the Prune Jaune taste like?

Why do the flowers drop without setting fruit?

What is a mid-season variety?

How can you tell when a fruit is ripe?

Should you pinch out the side shoots on a cherry tomato?

What should you monitor in the fish water for this tomato?

Element	Benchmark	What a deficiency looks like
Potassium	Supply at flowering	Smaller, less sweet fruit
Calcium	50 to 100 mg/L	Blossom end rot, a dry patch at the tip of the fruit
Iron	Judged by the leaves	Yellow young leaves with veins that stay green

Aim for a calcium to magnesium ratio of about 4 to 1.

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
Pinching out side shoots3 months	Pinching out side shoots: no	Pinching out side shoots: no	Pinching out side shoots: no	Pinching out side shoots: no	Pinching out side shoots: no	Pinching out side shoots in June	Pinching out side shoots in July	Pinching out side shoots in August	Pinching out side shoots: no	Pinching out side shoots: no	Pinching out side shoots: no	Pinching out side shoots: 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 coverTransplantingPinching out side shootsHarvest

This month October

Growing guidance

Seedling depth: 0.5 to 1 cmCover lightly, then firm down
Germination temperature: 16 to 20 °C
Germination time: 6 to 10 days
Nursery time: 5 weeks
Spacing: At least 50 cmBetween two plants, along the row
Fruit weight: 20 to 30 gIn clusters of 7 to 10
Fruit shape: Plum-shaped, lemon yellow
Earliness: Mid-seasonCrops until the first frosts
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

Bury the stem up to the first leaves when planting out. The buried part produces roots and anchors the plant for the whole season.
Mulch the soil as soon as you plant. Even moisture limits swings in watering, which are among the causes of blossom end rot.
In a greenhouse, ventilate from late morning. Above 70% humidity, the pollen sticks and fruit set fails.
Pinch out the side shoots every week and train the plant on two stems. A highly productive variety left to its own devices turns into a bush in which the fruits ripen in the shade.
In aquaponics, wait until the system has been running for 2 to 3 months before installing a tomato, even a small-fruited one, and monitor potassium from flowering onwards.
Pick preferably in the morning and come back often. Regular harvesting limits split fruits after rain.

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Yellow Plum Cherry Tomato Seeds

The summary