Red onion sets
At TOP The Onion Group, we supply first-year red 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 red 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 red 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 red 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 red 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
Benjamin Kater
Alina Kozyreva
Erwin Groen
Varieties
Discover the diversity of our varieties and find out which variety is best for you!
Early
Red Radiant
Red Radiant is a long-day hybrid variety bred by Allium Seeds UK. Red Radiant is the earliest red variety in our portfolio. The variety has to be planted in the sprin... More informationg, between mid-February and the end of May. Red Radiant produces uniform, round-shaped onions with deep red skins and a thin neck. The variety can be grown on any soil type but is unfit for long-term storage.
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Semi-early
Akado
As a relatively new variety bred by Hazera, Akado is an outsider in many ways. This mid-early variety is resistant to bolting and is therefore the only red variety wh... More informationich doesn’t require heat treatment. This makes Akado suitable for planting in both autumn and spring. Akado achieves high yields, produces good quality onions with a single core, has a thin neck and excellent skin. As far as we are concerned, it’s a real keeper!
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Mid-season
Romy
Romy is an open-pollinated mid-early red variety bred by the seed company Hoza Zaden. Hoza Zaden specializes in breeding hard varieties with strong skin, sprout dorma... More informationncy, and a high dry matter content. Romy is one of their varieties which produces hard, consistent round onions with a narrow neck and a deep red to purple skin colour.
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Maturity (early-late)
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Mid-season
Rolein
Rolein is similar to Romy in many ways, and it is also a variety from Hoza Zaden. Compared to its sister cultivar, Rolein performs better on clay soils. Rolein produc... More informationes medium-sized, hard, round onions with tough skin, a medium neck and a deep red colour.
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Maturity (early-late)
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Late
Red Baron
Who doesn’t know the Red Baron? Red Baron has proven to be a very reliable and high-yielding red onion with great storage characteristics. The variety is very popul... More informationar in both the hobby/gardering and commercial markets. The variety produces round to flat onions with an average neck, tough skin, and a deep red to purple colour. The onions are suitable for any soil type and, under the proper circumstances, suitable for long-term storage.
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Maturity (early-late)
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Late
Karmen
Red Karmen is a later maturing that originated in the Netherlands. Red Karmen is the most popular red variety for beginner gardeners. The tough skin makes this variet... More informationy perfect for small packaging and long-term storage. Red Karmen produces round to flat (flattened globe) onions with an average neck and a deep red to purple colour. The bulbs are notable for their attractive red colour.
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Maturity (early-late)
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