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Brassica organic seeds

Looking for organic seeds of Brassica? De Bolster is committed to providing organic growers with premium quality seed of the best varieties. Whether you are a professional grower, distributor or home garden seed supplier, we are determined to serve you in the best way we can, focused on your exact needs. Would you like to receive a quotation for organic seeds of Brassica? Simply click here to drop us an e-mail and we'll make sure to respond quickly.


Bloemkool Bermeo F1
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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Bloemkool Liria F1
Cauliflower 'Liria F1' is suitable for early autumn cultivation. Good self-covering which keeps the head nice and white. A strong crop.
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Bloemkool ‘Flora Blanca’
Cauliflower Flora Blanca is an old Dutch variety. It is one of the few varieties that do not produce a yellowish head, but a beautiful white one. Flora Blanca is most suited for autumn cultivation as this is easier compared to cultivation in summers.
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Boerenkool Roter Grünkohl
Curly Kale 'Roter Grünkohl' has beautiful purplish-red leaves. The colder the nights, the more purple the leaves become. This is a late variety that can easily tolerate frost.
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Boerenkool Westlandse Winter
This curly kale variety Westlandse Winter is a middle-high kale with green to dark green leaves. Growing this kale is easy. It can remain on the field during winter and obtains a sweeter taste when there was frost.
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Broccoli ‘Belstar F1’
Broccoli 'Belstar F1' is suitable for growing in summer and autumn. These are compact, very productive plants. 'Belstar' is resilient to secondary growth and matures earlier than most varieties.
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Broccoli Groene Calabrese
The broccoli Green Calabrese is closely related to cauliflower, although the leaves are more narrow and waved. Both the head, side shoots and sprouts can be eaten.
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Koolrabi Delikatess Blauwe
Kohlrabi Delicatesse Blue gives nice blue purple tubers with white fruit flesh. Kohlrabi is a fast growing crop with a lovely taste and can be eaten both cooked as raw (in crudités).
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Koolrabi Delikatess witte
Kohlrabi Delicatesse White gives nice light green tubers with white fruit flesh. Kohlrabi is a fast growing crop with a lovely taste and can be eaten both cooked as raw (in crudités).
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Koolrabi Superschmelz
This Kohlrabi variety Superschmelz should be planted somewhat broader than the Delicatesse White and Blue variety. The tubers can become at least 2 kg without getting that “woody” taste.
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Palmkool Nero di Toscana
Kale 'Nero di Toscana' is a typical Tuscan cabbage grown as kale. It can tolerate Tuscan winters but not Dutch winters.
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Rode kool Langedijker Bewaar 2
Red Cabbage Langedijker Bewaar 2 is a beautiful middle-big, high-round red cabbage. This variety requires a nutritious and moist soil.
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