Yellow onion sets
At TOP The Onion Group, we supply first-year 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 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 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 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 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 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 tot 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!
Overwinter
Senshyu Yellow
Senhyu Yellow is a very popular over-wintering onion. To obtain an early harvest, the onions should be planted between October 14th and October 31st. Senshyu Yellow i... More informations the earliest over-wintering variety in our assortment and should be consumed quickly after harvest as this cultivar is not suitable for storage. The yellow semi-flat (semi-globe) shaped onions originated in Japan.
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Overwinter
Shakespeare
Shakespeare is the best-performing over-wintering onion in our portfolio, bred by Allium Seeds UK. For an early harvest, the onions should be planted between the 14th... More information and 31st of October. Shakespeare is a few days later in maturity than Senshyu Yellow but gives higher yields and produces stronger flat-shaped (semi-oval) onions with a nice brown skin colour and an average neck. The high-performing onion can be stored for several weeks. For professional growers it is suitable for shipping to short destinations. The onion finds its origin in the United Kingdom and has a renowned reputation in Europe.
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Overwinter
Augusta
Augusta is an Eastern European winter variety known for its high yield, strong disease resistance, and reliable growth. The round onions have a firm, light to golden-... More informationyellow skin and develop uniformly under a wide range of conditions. Augusta matures slightly later than Senhyu Yellow, but earlier than Winteria. Thanks to its strong performance in colder climates, Augusta is a solid choice for growers aiming for an early and dependable harvest. Recommended planting period: October 14–31.
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Overwinter
Winteria
Winteria is a vigorous Eastern European winter variety, selected for its excellent winter hardiness, uniform growth, and outstanding onion quality. The medium to larg... More informatione bulbs have a firm, golden-yellow skin and stand out for their long shelf life. Winteria matures slightly later than Augusta, but makes up for this with a higher yield and superior storage quality. Recommended planting period: October 14–31.
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Maturity (early-late)
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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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Early
Preset
Preset is also a hybrid variety with characteristics very similar to Crusado and originates from the same breeding program. It matures just 2 to 3 days later than Cru... More informationsado, while maintaining the same skin quality and yield.
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Maturity (early-late)
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Semi-early
Contado
Contado is - just like Crusado - a long-day hybrid variety bred by Hazera. Compared to Crusado, Contado is a slightly lower-cost alternative, a few days later in matu... More informationrity and it has a slightly weaker root system. Contado produces yellow to bronze round to domed (semi-globe) shaped onions. The onion was originally bred in The Netherlands. Contado has an impressive track record and is well known and valued by professional onion growers.
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Maturity (early-late)
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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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Semi-early
Jaune Paille des Vertus
Jaune Paille des Vertus (straw yellow of Vertus) is an ancient French variety named after the "plain of Vertus", a forgotten plain in France located between Aubervill... More informationiers and Drancy. Until 1873, the Vertus was the largest vegetable growing area in France. The bulb’s characteristics are similar to the Stuttgarter Riesen. The Jaune Paille des Vertus produces flat-shaped onions with a beautiful bronze colour. When kept in a dry and well-ventilated place it can be stored successfully for a long period.
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Mid-season
Corrado
Corrado is a long-day hybrid variety in the medium-early slot, bred by Hazera. The main difference between early and late varieties is the earlier maturity of early v... More informationarieties and the higher yield of late varieties. Corrado is positioned somewhere in-between. The onions can be harvested reasonably early and give relatively good yields. Corrado is around two weeks later to mature than Crusado and produces yellow-brown round-shaped onions with an average neck.
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Mid-season
Cupido
Cupido's characteristics are similar to Corrado's. This variety is also bred by Hazera. The main difference between these varieties is that Cupido tends to have a fra... More informationgile skin and a weaker root system. On the other hand, Cupido is a bit more uniform in its bulb shape, which makes Cupido more attractive for industrial processing.
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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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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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Late
Vsetana
Vsetana finds its origin in the Czech Republic. Vsetana has similar characteristics to Sturon but tends to perform better in continental climates (Central Europe). Vs... More informationetana produces round to domed onions with a bronze-coloured skin and an average neck. Vsetana is suitable for long-term storage under the right circumstances.
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Late
Birnformige
"Birnförmige" (pear-shaped in German) is a variety that originated in Germany. Birnförmige, unique for its long shape as a plant, will produce pear-shaped onions pe... More informationrfect for making onion rings. The variety is also called "banana onion" and is suitable for short-term storage. Birnförmige has light brown skin and an average neck.
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