Why choose Bulbiverse as your specialist onion bulb supplier?
1. Complete short circuit – from producer to your farm
At Bulbiverse, onion bulbs are grown and packaged by our own specialized agricultural partners, without any middlemen. You benefit from competitive producer prices and rigorous quality control on each batch (size, health status, germination capacity).
2. B2B logistics designed for onion producers
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Real-time availability: daily stock updates; in an industry where quality is paramount, it is advisable to reserve your onion varieties 2 to 4 months in advance to guarantee the best strains.
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Express preparation: during the planting season, delivery within 7 to 15 days throughout France and Europe. Outside Europe is possible upon request.
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Suitable packaging: 25 kg bags, pallet boxes or big bags according to your needs; we optimize the packaging to preserve the quality of the bulbils while reducing your logistics costs.
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Delivery: France delivered within 7 days, Europe within 15 days; for destinations outside Europe, a tailor-made offer. Incoterms DAP or FCA of your choice.
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Proactive monitoring: real-time tracking by our teams.
3. Agronomic expertise dedicated to onion cultivation
Founded in 2024 by vegetable production specialists, Bulbiverse puts its expertise at the service of professional onion growers. Our technical team supports you on:
- optimal planting calendars (spring onion, short-day onion, storage onion),
- sowing densities and bulblet calibration to maximize your marketable yields,
- integrated management of specific diseases (downy mildew, botrytis, leaf blight) and appropriate fertilization,
- the choice of varieties: yellow onion (Stuttgart, Sturon), red onion (Red Baron, Karmen), white onion (Snowball, Albion), Roscoff onion depending on your needs.
4. Guarantees & testimonials from onion producers
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Google Rating: 5/5
Sanitary quality, performance and customer service are the most mentioned strengths.
Recent testimonials from professionals
“Stuttgart onion, exceptional growth and uniform size.” — Organic market gardener (May 2025)
“Top-notch Red Baron onion bulbs, intense color guaranteed.” — 25 ha farm (Feb. 2025)
“Perfect Roscoff AOP onions, impeccable quality.” — Vegetable cooperative (March 2025)
“Expert advice on long-lasting onions.” — Specialist producer (Jan. 2025)
How to order your onion bulbs from Bulbiverse?
Request your personalized quote now – response within 48 hours for your onion bulbs:
Professional account opening within 24 hours, free of charge. Payment terms adapted to production cycles.
Reference onion varieties for French professional production
The French professional onion market is full of technical varieties , each with unique characteristics to meet specific needs, whether for fresh sale, long-term storage, or processing. Varietal selection is a crucial step for market gardeners looking to diversify their range or nurseries looking for reliable products.
Centurion F1 Onion: versatile fresh and storage reference
The Centurion F1 Onion, a popular hybrid variety, is primarily intended for the fresh market thanks to its excellent productivity, regular size and remarkable shelf life. Its bulbs, broadly oval to round, weigh on average 110 to 150 grams and offer a mild, slightly spicy taste, appreciated both in salads and stews. With commercial yields of 25 to 42 tonnes per hectare , even reaching 58 tonnes per hectare in optimal conditions, and a mid-early maturity ( 90-day cycle ), Centurion F1 is positioned as a versatile standard for supplying wholesalers, supermarkets and short supply chains. Although its profile is oriented towards fresh produce, use for certain processing methods, such as packaging in nets or ready meals, remains possible.
Hylander F1 onion: performance and long-lasting resistance
Hylander F1, a Rijnsburger hybrid, is a mid-early variety (P3) known for its very round, uniform, large bulbs and its bright copper-yellow color. Its major asset lies in its very high resistance to downy mildew (Peronospora destructor) and intermediate resistance to Pyrenochaeta terrestris (Pt), offering valuable health security to producers. Its excellent storage capacity, rated "++", allows easy storage until April/May after a September harvest, positioning it as a reference for the storage onion market.
Boga F1 onion: innovation resistant to mildew
Boga F1 is a round yellow onion, the first bulb on the market to present a high resistance to downy mildew (Peronospora destructor), a major agronomic advantage for reducing phytosanitary treatments. This late variety ( earliness index 11 ) offers a very good yield ( index 105 ) and excellent storage quality. Its high long-term storage capacity makes it mainly suitable for dry sale on the fresh market after storage, meeting the winter supply needs of professionals.
Red Bull F1 Onion: Large Size and Winter Storage
With its large bulbs ( 7 to 8 cm in diameter ), its round to globular shape and an intense dark red color that penetrates to the center, the Red Bull F1 Onion is visually very attractive. This long-day variety has a high firmness ( 8/10 ) and a strong skin, guaranteeing a very high storage capacity (rated "++") until all winter . Mainly intended for the fresh market, it is an excellent choice for professionals looking for a superior quality product for long-term storage.
Complementary varieties for professional diversification
To complete this selection, several other varieties deserve the attention of professionals.
- Troy F1 onion, a very early Japanese-type hybrid, stands out for its intense yellow color and its size of 50 to 80 mm , ideal for rapid marketing.
- Jetset onion, also very early, produces very large round bulbs with coppery yellow skin, perfect for the fresh market with rapid consumption.
- Parisian Extra-Early Onion, an old white variety, very early and winter-hardy, is particularly appreciated for marketing in bunches and fresh consumption.
- Bellesco F1 onion, a very early new American type (P0/P1) with coppery bulbs of 70 to 80 mm , offers intermediate resistance to mildew.
- Snowpack F1 Onion is a hybrid white onion characterized by a very high dry matter content, making it particularly suitable for industrial dehydration .
- Onion Musica F1, a yellow onion of the Grano/Liria type, is distinguished by a strong root system and high productivity, although its conservation is more limited.
- Bianca di Giugno Onion – Starlight, a short-day white onion ( 2-3 cm in diameter ) is specifically grown for the fresh market and for sale in bunches, with a mild flavour.
- Valenciana onion, a traditional Spanish variety, is known for its imposing bulbs ( up to 10 cm in diameter ), round, with straw-yellow to copper-colored skin, and excellent storage.
- Forum F1 Onion, a dark yellow Japanese hybrid, is very early and shows excellent bolting tolerance, with good yield potential.
- Summit F1 Onion, an early Rijnsburger (P1-P2), offers excellent uniformity and long shelf life ( until May ).
- Redlander F1 onion, a Rijnsburger hybrid red onion, has high resistance to mildew and very good storage.
These varieties, whether F1 hybrids or fixed populations, constitute reliable choices for quality professional production in France.
Planting calendar optimized by region
The onion planting period in France, for professionals, generally extends from mid-February to the end of April , in order to take advantage of warming soils while avoiding excess winter humidity. However, regional and varietal adaptation is necessary to optimize bulb development and secure harvests.
In the northern and northeastern regions, where the climate is cooler, planting is optimal from March to the beginning of April , once the soil has dried out and warmed up (ideally above 7°C ). For the southern regions, the Loire Valley or the Southwest, characterized by a milder climate, it is possible to start planting from mid-February , allowing for anticipation of harvests. In Brittany and other humid coastal areas, the end of February to the end of March is recommended to avoid excessive winter rain and the risk of rot.
Variety-specific calendar
Some varieties offer planting flexibility. Centurion F1 Onion can be planted from February to April from seedlings or bulbils, with an optimal bulbil planting time from March to May . Troy F1 Onion is versatile, with autumn planting ( mid- to late October ) for mild-winter regions, or spring planting ( mid-April to early May ) in more temperate climates. Hylander F1 is direct sown from March 1 to April 20 , with pre-cropping and transplanting options available in April-May. Jetset can be planted from February to April or autumn ( October-November ) in mild-winter regions.
The Valenciana Onion is planted in spring ( March-April in open fields) or in autumn ( August-September in nurseries for transplanting in October-November) in areas with mild winters. The Extra-Hâtif Parisien, very winter-hardy, can be sown in nurseries in August for an early harvest or by direct sowing from March to the end of June . The Red Spring F1, a winter onion, is sown between August 25 and September 10 for an early summer harvest, or from mid-March to the end of May for a spring crop. Bellesco F1 is sown from the end of February to the beginning of April in the North and East, from mid-February to the end of March in the Center, and from February to March in the West and Southwest.
Technical parameters of planting
It is essential to maintain a spacing of 10 cm between each bulb in the row and 20 to 25 cm between rows to optimize development. The bulblets should be planted at a depth just below the soil surface, with the tips slightly visible.
Control of harvest dates and maturity indices
Harvesting onions in professional cultivation is a crucial step to ensure the quality of the bulb and optimize its conservation. The most reliable sign of maturity is the yellowing and natural folding of the foliage , indicating that the plant has transferred most of its reserves to the bulb.
Harvest cycles by variety
The growing cycle varies considerably from one variety to another. For the Centurion F1 Onion, harvesting takes place from July to early August , after a cycle of 90 to 120 days . The Troy F1 Onion, being very early, allows harvesting from mid-June , with a cycle of approximately 60 to 75 days after planting. For spring plantings, Troy F1 harvesting takes place approximately three months after germination, while winter plantings can be harvested in 2.5 months.
Varieties intended for storage, such as Hylander F1, are harvested later, from September to October , ideally between September 10 and 30. The cycle of Hylander F1 after sowing is 172 days . Jetset, an early variety, can be harvested from April to August for fresh use, or from mid-July to early September for storage. Boga F1 Onion is generally harvested in August . Extra-Hâtif Parisien offers a very wide harvest window, from April to May for autumn sowing and from May to September for spring sowing, with a cycle of 90 to 150 days .
Red Bull F1 is harvested from August 5 to 25 , after a cycle of about 115 to 117 days after sowing. Red Spring F1, with a cycle of 140 to 170 days , is harvested from mid-August to October , or from June to early July for autumn sowing. Forum F1, particularly early, is ready to be harvested from mid-June to early July , or about 100 to 140 days after sowing. For Musica F1, the harvest is in June-July , with a cycle of 265 days . Bianca di Giugno – Starlight, an early white onion, is harvested between May 15 and July 15. Finally, Valenciana Onion, a late variety, is harvested from May to July for autumn sowing and from July to September for spring sowing, its cycle lasting from 5 to 8 months .
Post-harvest techniques
After harvesting, it is crucial to let the bulbs dry out on the ground for a few days ( 2 to 5 days ) before storing them in a dry, well-ventilated place. For optimal conservation, the foliage should be cut 1 or 2 cm above the collar , and post-harvest drying is essential.
Yield optimization and nutritional management
The performance of your onion crops isn't limited to varietal choice and timing. Rigorous input management and constant health monitoring are the cornerstones of profitable professional production.
Professional performance potential
Average yields for storage onions in France are generally between 18 and 60 tonnes per hectare , with a common average of 50 tonnes per hectare for well-managed plots. Fresh onions, harvested before maturity, often have yields below 50 tonnes per hectare due to their shorter cycle. Varieties such as Centurion F1 can reach 25 to 42 tonnes per hectare , or even 58 tonnes in optimal conditions. Red Bull F1 has a yield index of 110 , while Forum Onion F1 is at 93. Hybrids such as White Lady F1 can reach 34 to 67 tonnes per hectare , with an average of 50 to 65 tonnes in the best conditions. Planting density is also a key factor: for example, Hylander F1 is recommended at 750,000 to 900,000 seeds per hectare .
Balanced Fertilization Program
Balanced fertilization is essential for optimal onion development. General requirements are around 100 to 130 kg/ha of nitrogen (N) , 60 to 90 kg/ha of phosphorus (P2O5) and 150 to 220 kg/ha of potash (K2O) . These applications must be split to maximize their effectiveness and limit losses.
As a general rule, all of the phosphorus and most of the potassium are applied as a base dressing before sowing or planting. Nitrogen, on the other hand, is divided into several applications: one third before sowing, then the remainder in 1 to 2 applications at the 3-4 leaf stage and at the beginning of bulb growth. It is crucial to avoid excess nitrogen at the end of the cycle, as this can harm bulb preservation and promote rotting.
Trace elements such as sulfur ( 30-40 kg/ha ), boron ( 1-2 kg/ha ), manganese ( 2-3 kg/ha ) and zinc ( 1-2 kg/ha ) are also essential for bulb formation, coat quality and disease resistance. Foliar applications can be considered in cases of proven deficiency or deficient soils.
Health protection strategies and varietal resistance
The resilience of onion varieties to diseases and abiotic stresses is a major selection criterion for professionals. Tolerance to bolting, which degrades bulb quality, is a sought-after characteristic in many modern varieties.
Documented genetic resistances
Many hybrid varieties offer significant genetic resistance:
- Hylander F1 and Boga F1 are distinguished by their high resistance (HR) to downy mildew (Peronospora destructor).
- Redlander F1 also has high resistance to mildew .
- Bellesco F1 has intermediate resistance (IR) to downy mildew .
- Several varieties such as Centurion F1, Troy F1, Forum F1, Red Spring F1, Musica F1, Blush F1, Snowpack F1 and Red Bull F1 display intermediate resistance (IR) to other diseases such as Pyrenochaeta terrestris (Pt) or Fusarium oxysporum (Foc).
Integrated pest management strategy
Although some varieties show robustness against pests such as thrips or aphids, no specific genetic resistance is explicitly documented for most of them. It is therefore recommended to adopt an integrated pest management strategy, including crop rotation (do not replant onions on the same plot for 3 to 5 years , or even 6 to 8 years for certain varieties), careful soil preparation and controlled irrigation to limit risks.
To summarize: Our onion bulbs
Bulbiverse, a specialist wholesale supplier of onion bulbs , secures your professional supplies. Our bulbils are rigorously sorted, calibrated from 10-21 mm, bagged in 25 kg bags or packaged in aseptic big-bags and then stored at 2 °C to maintain a germination capacity greater than 95%. Buying onion bulbs from an integrated player guarantees you a stable producer price, complete health control and traceability from the plot to your field.
Our dedicated B2B logistics ships orders within 7 days in France (15 days in Europe) with real-time tracking. Agronomic engineers detail densities (800,000 plants/ha), fertilization (120 kg N, 180 kg K₂O) and regional schedules to target 40 – 60 t/ha. As a specialist wholesale supplier of onion bulbs , Bulbiverse offers advance reservations to secure the most sought-after hybrid varieties. Buying onion bulbs immediately after harvest gives you access to premium batches with intact skins, high resistance to mildew and a sliding scale of pricing based on tonnage.
From the early Troy F1 to the long-life Hylander F1, each batch comes with a phytosanitary certificate, germination test, and advice sheet. By choosing Bulbiverse, you're working with a specialist wholesale supplier of onion bulbs who controls the entire chain, from the seed field to unloading on your farm. For your future plantings, buying onion bulbs by quote within 48 hours or ordering online remains simple: one click, immediate acknowledgment of receipt, and temperature-controlled shipment in peak season.
