Yellow onion sets (organic)
At TOP The Onion Group, we supply first-year organic yellow 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 organic yellow 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 organic yellow 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 organic yellow 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 organic 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 organic yellow 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
Benjamin Kater
Varieties
Discover the diversity of our organic varieties and find out which variety is best for you!
Overwinter
Shakespeare
Shakespeare is the best-performing overwinter onion in our portfolio, bred by Allium Seeds UK. For an early harvest, the onions should be planted between the 14th and... More information 31st of October. Shakespeare is a few days later in maturity than Senshyu Yellow but gives higher yields and produces stronger flat-shaped onions with a nice brown skin colour and an average neck. The well-performing onion can be stored for several weeks.For professional producers it can be shipped to short destinations. The onion finds its origin in the United Kingdom and has a renowned reputation in Europe.
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Maturity (early-late)
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Root system
Early
Crusado
Crusado is a relatively new long-day hybrid variety bred by Hazera. The onion is one of our best performing varieties. Crusado can be harvested relatively early, has ... More informationa tough skin, gives a good yield and boasts a remarkable root system. When breeding this onion, good storage characteristics, yield, early maturity and a strong root system were most important. Because of its unrivalled root system, Crusado outperforms any other variety in dry conditions. The onion can be stored for several months without any loss of quality. This makes it ideally suited to overseas shipment. The yellow to brown uniform round-shaped onions should be planted in the spring, at the earliest, from the 2nd week of February onwards. The onion has a thin neck and has its origins in The Netherlands following many years of intense breeding.
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Maturity (early-late)
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Yield
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Root system
Semi-early
Stuttgarter Riesen
Stuttgarter Riesen, with its unique round-shaped bulbs, is the most popular variety for the hobby gardener. When Stuttgarter Riesen is fully grown it produces flat to... More information flat-round shaped onions. Because of its flat appearance the Stuttgarter Riesen is not cultivated in Western Europe. Traditionally, the Western European market prefer its onions to be round-shaped, so they are usually only found in gardens. However, in Southeast Europe it's exactly the other way around. Here people recognise flatter onions as being traditional and locally-grown onions which round onions are often perceived as having been imported.
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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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Root system
Late
Setton
Setton outperforms every variety when it comes to yield, skin quality, firmness, storage ability, and root system. Setton, bred by Syngenta, is a long-day variety wit... More informationh a late maturity. The variety is well known by professional growers because of its high yield and uniform round shape. When kept in the right conditions, Setton can be stored for at least 9 months. Setton thrives at a latitude above 48 degrees (above the line of Paris) and because of its uniform round shape, it's the best variety for industrial processing.
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Maturity (early-late)
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Yield
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Skin quality
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Storability
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Root system
Late
Sturon
Sturon is the most popular variety in the professional sector. Sturon is an old variety renowned for its suitability for storage and good yields. The stable and consi... More informationstent variety produces round to dome-shaped (globe-shaped) brown onions with an average neck. Sturon is also popular among hobby growers.
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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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