From our own production – freshly in stock
100% organic, GMO-free
High-quality seeds with excellent germination

Varieties for professional growers

Here you will find a selection of varieties that have proven themselves in organic cultivation, and so are especially suited for professional growers. Some varieties result from our own breeding program, among which our specialisms squash, tomatoes and peppers. Furthermore, we also offer other proven varieties, in close co-operation with co-breeders from the field. At De Bolster you can find the best assortment of organic seeds for a successful organic cultivation.

> Leaf vegetables
> Brassica
> Legumes
> Fruit vegetables
> Root vegetables
> Herbs
> Flower Mixtures
> Green Manure


Stengelui Ishikura Long White PRO
Onion (spring) Ishikura Long White is a Welsh onion that forms a long, white, thick shaft without forming a sphere. The leafage is light green, and the variety is resistant to damage from thunderbugs. The plants nicely stand up straight. Ishikura Long White is winter-hardy.
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Quantity
Size € 3,39
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Bleekselderij Mambo F1 – Apium graveolens PRO
Celery 'Mambo F1' Apium graveolens 1366
Celery 'Mambo F1' is suitable for cultivating throughout the growing season and is strong against leaf spot. A wonderfully aromatic vegetable that is a popular ingredient in salads and sauces.
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Quantity
Size € 5,49
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Bleekselderij Tango F1 PRO
Celery 'Tango F1' Apium graveolens 1365
Celery 'Tango F1' is suitable for cultivating throughout the growing season. This very productive variety has white to light green stalks. Very resistant to blackheart.
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Quantity
Size € 5,49
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Knolselderij Monarch – Apium graveolens PRO
Celeriac 'Monarch' Apium graveolens 1412
Celeriac ‘Monarch’ is a reliable variety that has proved its worth for more than 40 years. The large roots are wonderfully white on the inside and have a delicate, nutty flavour.
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Size € 3,39
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Japanse Haver - Groenbemester – Avena strigosa PRO
Lopsided Oat is an excellent green manure that is exceptionally well suited for later sowing as well. Lopsided oat arises very quickly and produces a lot of plant material above ground and is therefore very useful against weeds.
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Quantity
Size € 3,39
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Snijbiet Fireworks - Beta vulgaris subsp. cicla PRO
Chard 'Fireworks' Beta vulgaris subsp. cicla 1885
Chard 'Fireworks' is a beautiful mixture of chard in multiple colours (red, purple, orange, yellow and white). The leafs of this chard are mostly green. Even after stir-frying or stewing the stems maintain their lovely color.
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Quantity
Size € 3,39
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Gele biet Boldor - Beta vulgaris subsp. conditiva PRO
Beetroot 'Boldor' Beta vulgaris subsp. conditiva 1068
Golden beetroot 'Boldor' has sturdy, healthy leaves and globe-shaped, smooth roots with an orange skin and beautiful bright-yellow flesh. Can be eaten both raw and cooked.
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Quantity
Size € 3,39
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Rode biet Boro F1 – Beta vulgaris PRO
Beetroot 'Boro F1' Beta vulgaris subsp. conditiva 1055
Beetroot 'Boro F1' has a lovely red colour both on the inside and outside. The variety keeps well in the autumn and winter.
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Quantity
Size € 5,49
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Bladmosterd ‘Golden Frills’ PRO
Golden Frills is a mustard variety with fine incised, fresh green leaves and a spicy taste. Mustard leaf has been grown and eaten in the Himalaya region in India for over 5000 years. Also in many other countries is leaf mustard a part of the daily menu.
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Quantity
Size € 2,99
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Bladmosterd Purple Frills PRO
Purple Frills is a mustard variety with fine incised, deep purple leaves and a spicy taste. Mustard leaf has been grown and eaten in the Himalaya region in India for over 5000 years. Also in many other countries is leaf mustard a part of the daily menu.
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Quantity
Size € 2,99
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Koolraap Wilhelmsburger – Brassica napus NEW!
Swede 'Wilhelmsburger' offers mid-size, round tubers with a smooth skin and a light green head. Its yellow flesh is firm and has a delicious taste. Stores well.
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Quantity
Size € 2,99
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Bloemkool Bermeo F1 PRO
Cauliflower 'Bermeo F1' is suitable for early summer cultivation. This cauliflower has a flattened, round head and good firmness. Leaves are reasonably self-covering.
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Quantity
Size € 5,49
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