organic seeds for

growers' success
Premium organic seeds
100% organic, GMO-free
Fast delivery within Europe

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


Ui Albion F1 – Allium cepa PRO
Onion ‘Albion F1’ is a lovely white, highly uniform and productive variety suitable for the fresh market and for short-term storage. It has a pungent yet slightly sweet flavour.
> Read more
Quantity
Size
Please select volume
> read more
Ui Hylander F1 PRO
Onion 'Hylander F1' is a middle-early, mildew-resistant variety. Nice round and uniform onions. Good skin and storage quality. High yielding.
> Read more
Quantity
Size
Please select volume
> read more
Ui Redlander F1 – Allium cepa PRO
Onion ‘Redlander F1’ is an early variety of red onion with a high downy mildew resistance. Has excellent keeping qualities and uniform, high yields.
> Read more
Quantity
Size
Please select volume
> read more
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.
> Read more
Quantity
Size
Please select volume
> read more
Kervel Massa PRO
Chervil 'Massa' Anthriscus cerefolium 3135
A dark-leaved, slow bolting chervil. The flat leaves of ‘Massa’ have a lovely, sweet, aniseed-like flavour and a delightful fragrance.
> Read more
Quantity
Size
Please select volume
> read more
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.
> Read more
Quantity
Size
Please select volume
> read more
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.
> Read more
Quantity
Size
Please select volume
> read more
Knolselderij Balena F1 – Apium graveolens PRO
Celeriac ‘Balena F1’ has healthy, strong, upright foliage and a fast-maturing root with lovely firm, white flesh. This breed is highly resilient to bolting and exceptionally tolerant of cold.
> Read more
Quantity
Size
Please select volume
> read more
1412 Celeriac Monarch 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.
> Read more
Quantity
Size
Please select volume
> read more
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.
> Read more
Quantity
Size
Please select volume
> read more
Snijbiet ‘Five Colours’ PRO
Chard 'Fireworks' Beta vulgaris subsp. cicla 1885
Chard 'Fireworks' (previously known as 'Five Colours') 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.
> Read more
Quantity
Size
Please select volume
> read more
Gele biet Boldor - Beta vulgaris subsp. conditiva NEW!
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.
> Read more
Quantity
Size
Please select volume
> read more