White onion sets
At TOP The Onion Group, we supply first-year white onion sets of the highest quality. Thanks to our own cultivation and collaboration with leading breeders such as Hazera, we select only the very best varieties. Suitable for both professional growers and hobby gardeners.
Product description
Why choose our first-year white onion sets? Because we grow them ourselves, we know our varieties in detail. Only varieties that meet our strict criteria are included in our cultivation program. This guarantees:
- Top-quality onion sets
- Optimal growth performance on various soil types
- Reliability and uniformity in yield
Unique cultivation locations ensure guaranteed quality
We distinguish ourselves through geographically distributed cultivation. This limits risk and ensures stable quality:
- We are the only grower in the sector to cultivate on pristine, disease-free plots in Northern France.
- We carefully select plots in Southwest Netherlands and the Flevopolder region, in collaboration with our cultivation specialists.
Our crop managers closely monitor growth using a specially developed cultivation program tailored to the unique conditions of each growing region.
Selectplant certification: assurance for your onion crop
Our white onion sets are certified with the independent NAKTuinbouw Selectplant quality mark. This offers additional assurance beyond the European standard:
✔ Free from downy mildew (Peronospora destructor)
✔ Free from white rot (Sclerotium cepivorum)
✔ Standard testing for stem nematodes (Ditylenchus dipsaci)
By cultivating on plots free from these soil-borne diseases, we ensure a healthy and trouble-free start to the growing season.
Exclusive partnership with Hazera for hybrid varieties
TOP The Onion Group is the exclusive producer and supplier of Hazera’s first-year onion set variety range. Hazera is a global leader in seed breeding and provides:
- Hybrid varieties with high disease tolerance
- Better performance under challenging cultivation conditions
- Innovative variety development tailored to real-world growing needs
Flexible delivery of white onion sets: tailored to your needs
We fully tailor our deliveries to the customer’s preferences. Whether you manage a large acreage or need smaller volumes:
- Bulk loose onion sets for professional growers
- Pre-packaged onion sets for hobby gardeners
- Private-label packaging options available
- Full traceability and product information upon request
Every first-year onion set batch is thoroughly checked through lab testing and field trials, both on our own test plots and external locations.
Want to know more or place an order?
Looking for top-quality white onion sets? Need advice on variety selection or delivery options? Feel free to contact us. Our crop specialists are happy to help you!
Product information
Small packaging:
250 gr until 5 kg, private label possible
Large-volume packaging:
5 kg until 20 kg, bigbags, bulk, boxes, other packages on request
Production company:
TOP Onions Sets B.V., TOP Cultures France SARL
Location:
's-Gravenpolder (NL), Bihucourt (FR)
Contact person
Erwin Groen
Alina Kozyreva
Varieties
Discover the diversity of our varieties and find out which variety is best for you!
Mid-season
Snowball
Snowball, unique due to its white colour, is slightly sweeter and milder in taste compared to yellow onions. The variety is the perfect choice for sandwiches and sala... More informationds. Snowball is a mid-early variety and originates from the United Kingdom. The variety is suitable for both gardeners and commercial growers. Snowball produces consistent round onions with an average neck and white-coloured skin. Snowball is suitable for any soil type, but not for long-term storage.
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Maturity (early-late)
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Mid-season
Southport White Globe
Southport White Globe is a mid-early variety and is originally from the Netherlands. This onion is also known as 'Silver Ball' and 'White Rebecca', thanks to its whit... More informatione skin colour. Southport White Globe is especially suitable for the production of spring onions. The variety produces round onions with an average neck and tough skin. Southport White Globe is suitable for any soil type, but not for long-term storage.
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Maturity (early-late)
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Yield
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Skin quality
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Firmness
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Storability
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Root system
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