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Onion organic seeds

Looking for organic seeds of Onion? 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 Onion? Simply click here to drop us an e-mail and we'll make sure to respond quickly.


Ui Hylander F1
Onion 'Hylander F1' is a middle-early, mildew-resistant variety. Nice round and uniform onions. Good skin and storage quality. High yielding.
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Ui Red Baron – Allium cepa
Onion 'Red Baron' is a somewhat flattened onion with a beautiful red colour and a strong flavour. This is a relatively high-yield onion that also stores well. 'Red Baron' is a versatile variety since it is also suitable for use as a bunching onion.
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Ui Red long of Florence
Onion Red Long of Florence is a bottle-shaped onion with a beautiful red colour. The onions taste mild and sweet. This onion is also suited for salads. The Red Long of Florence is not suited for storage. Sowing later results in onions with thickened stalks. When the leafage starts to die, the onions should be harvested. The onions have to dry out well before storage.
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expected December 2021
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Ui Rijnsburger 4
White onion Rijnsburger 4 has beautiful round, straw yellow onions, which have an excellent storage capacity. When the leafage starts to die, the onions should be harvested. The onions have to dry out well before storage.
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expected December 2021
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Ui Stuttgarter
Onion Stuttgarter, also known as ‘Stuttgarter Riesen’, is a well-storable yellow, flat round onion, which can be used for the cultivation of scallions as well. Sowing later results in onions with thickened stalks. When the leafage starts to die, the onions should be harvested. The onions have to dry out well before storage.
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Bosui White Lisbon
Onion (spring) White Lisbon develops a medium-long, white shaft and forms a small sphere. The leafage is light green and stands nicely upright. Sow the scallions close to each other, so that they stay fine. The onions can be harvested when they are 2-3 cm in diameter.
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Stengelui Ishikura Long White
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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Ui Albion F1 – Allium cepa NEW
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.
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Ui Redlander F1 – Allium cepa NEW
Onion ‘Redlander F1’ is an early variety of red onion with a high downy mildew resistance. Has excellent keeping qualities and uniform, high yields.
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Ready to ship: 3-4 days
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