Collection: Sternbergia bulb wholesaler – Floriverse, your direct producer channel

Why choose Floriverse as your specialist wholesaler?

1. Complete short circuit – from the field to your plot

At Floriverse, Sternbergia bulbs are grown and packaged by our own horticultural partners, with no middlemen involved. This means you benefit from stable producer prices and rigorous quality control on each batch (size, health, consistency).

2. B2B logistics calibrated for professionals

• Real-time availability: daily stock updates; in a sector where supply is limited, it is advisable to reserve your varieties 3 to 6 months in advance to guarantee varietal choice.
• Express preparation: during the season, delivery within 7 to 15 days throughout France and Europe. Outside Europe is possible upon request.
• Optimized packaging: packaging varies according to the volume ordered; we select the most protective solution for the health of the bulbs while guaranteeing the best optimization of logistics costs.
• Delivery: France delivered within 7 days, Europe within 15 days; for destinations outside Europe, we prepare a tailor-made offer. Incoterms DAP or FCA of your choice.
• Proactive monitoring: real-time tracking by our teams.

3. Horticultural expertise

Founded in 2024 by plant enthusiasts, Floriverse offers its expertise in flower bulb cultivation to professional florists. Our technical team advises you on:

• the choice of planting calendars (open field / greenhouse forcing),
• optimal densities to maximize the rate of marketable stems,
• integrated management of pests and sustainable fertilization.

4. Guarantees & customer reviews

• Google Rating: 5/5
  Responsiveness, speed and product quality are the most cited points.

Recent customer excerpts

“The plants are of high quality, extremely careful delivery.” — S. Aubailly (May 2025)

“Responsiveness, professionalism, good price.” — A. Benedetto (Feb. 2025)

“Superb blackcurrant plants, accommodating service.” — F. Laurent (March 2025)

“Responsiveness, friendliness and top-notch products.” — E. Fleurat (Jan. 2025)

“Professional advice, fast delivery, impeccable quality.” — V. Morales (Nov. 2024)

“Unbeatable prices and impeccable customer service.” — AC (Dec. 2024)

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How to order from Floriverse?

Request your personalized quote now – response within 48 hours for a batch of Sternbergia bulbs:

• Send your quantities and delivery dates to info@economealegumes.fr
• Call us at 06 28 78 57 28
• Or fill out our online form directly: https://bulbesdefleurs.com/pages/contact

We open your wholesale account in less than 24 hours, with no activation fees, and provide a customized quote based on your volumes.

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Professional applications of Sternbergia in flower production

Sternbergia lutea stands out for its versatility and ornamental interest for various professional applications, whether in landscaping or for flower production.

Landscape integration and naturalization

Sternbergia lutea, with its modest height of 10 to 20 cm , blends harmoniously into many landscapes. It excels in flowerbeds, where it brings visual dynamism in late summer and autumn, a period when summer perennials decline. Its compact size and natural appearance make it an ideal choice for rockeries and path borders, creating clean and colorful boundaries.

For ornamental meadows and open forest edges, Sternbergia naturalizes easily, forming dense, perennial mats, thanks in part to its rapid natural multiplication . It can also be used to enliven lawns, creating seasonal points of interest, and combines ideally with ornamental grasses, providing an aesthetic textural contrast.

A major advantage for professionals is its natural resistance to rodents (mice, field mice, voles), unlike other bulbs, which reduces losses and ensures better sustainability of plantations.

Relevance for communities and large public spaces

For managers of communities and large public spaces, Sternbergia offers considerable economic and aesthetic benefits. Its ease of maintenance is an undeniable asset: it thrives in poor, dry, and stony soils, limiting the need for amendments, irrigation, and regular maintenance.

It is ideally planted in full sun but tolerates partial shade, which offers great flexibility in landscaping for slopes, flowerbeds or verges that are often difficult to access. After flowering, simple cleaning of the dry foliage is sufficient, and the clump slowly thickens without requiring specific annual divisions for several years.

Its long-lasting flowering in autumn , from September to October, is particularly rewarding because it brings a bright golden yellow color at a time when flowering is rare. Each bulb can produce one or more flowers, and a planting density of 50 to 100 bulbs per 10 m² allows for colorful and perennial carpets. The flowering of a planted group lasts 3 to 4 weeks, with each flower lasting about ten days depending on the conditions.

Cut flower potential

Although Sternbergia lutea has undeniable aesthetic qualities with its bright yellow flowers and its original crocus-like appearance, its potential as a cut flower is moderate. Its stems are relatively short, measuring on average 10 to 15 cm , which may limit some uses in bouquets. Furthermore, no information is available on its vase life or on a perceptible fragrance.

Its main advantage lies in its autumn flowering period (September to October), which coincides with a season when there is less competition in the cut flower market. It is therefore more of a niche product, highlighting its rarity and distinctive autumn flowering, ideal for small floral arrangements.

It is important to note that Sternbergia is an endangered species and protected by CITES (Convention on International Trade in Endangered Species of Wild Fauna and Flora), which requires obtaining a specific certificate for its export and marketing.

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Planting techniques and optimal seasonality

Successful planting of Sternbergia depends on compliance with precise technical parameters regarding timing, soil and exposure.

Seasonality of flowering

Sternbergia are bulbous perennials whose flowering is concentrated mainly in autumn, generally extending from September to October . For the species Sternbergia lutea, flowers can appear as early as early September and continue until October. This autumn flowering period is a key feature for planning your productions and landscaping, providing distinctive visual interest when many other plants have completed their flowering cycle.

Technical planting calendar

The planting period is crucial to ensure successful autumn flowering. The optimal period is July-August . Late planting, until mid-August, is possible for flowering as early as September. Beyond September, flowering may be compromised. In regions with harsh winters, planting in spring, after all risk of frost, is also an option.

Bulb Depth and Spacing

The recommended planting depth for Sternbergia bulbs is approximately 5 cm below the soil surface for conventional planting. However, some sources suggest a depth of up to 15 cm, particularly for Sternbergia lutea, or the general rule of three times the bulb diameter. For professional cultivation, a bulb planter is recommended for precise placement and to prevent rot.

The optimal spacing between each bulb varies from 10 to 15 cm , which allows the plants to develop and form dense clumps over time. In terms of density, you can aim for 15 bulbs per m² for beds, up to 50 to 100 bulbs per m² for rapid naturalization effects, or even 100-150 bulbs/m² for intensive professional cultivation. For pot cultivation, approximately 5 bulbs per 15 cm diameter pot are recommended.

Soil requirements and drainage

Sternbergia is not very demanding when it comes to soil fertility, but drainage is an absolutely imperative factor . It thrives in well-drained, light, even poor, stony or sandy soils, with a preference for calcareous soils. Winter moisture is the main enemy of the bulbs, which can lead to their rot.

Although no specific pH is consistently cited, a neutral to slightly alkaline pH (approximately 6.5-7.5) is inferred from its Mediterranean origins. To improve drainage in heavy soils, it is recommended to incorporate 1/3 coarse sand or gravel. Planting on mounds (raised by 10-20 cm) is a very effective method in naturally moist soils.

For growing in pots, a mixture of 1/3 loam, 1/3 potting soil and 1/3 medium-grained river sand or perlite is ideal.

Optimal light exposure

Sternbergia requires a very sunny exposure to ensure abundant flowering and good vigor. A location in full sun, with at least 6 hours of direct sunlight per day, is ideal. South or southwest orientations, without shade, are preferred. Partial shade is tolerated, but the flowering may be less spectacular.

Water and fertilization requirements

Sternbergia is particularly suited to dry, stony soils and tolerates summer drought well. Watering should be limited and especially avoided during the summer dormancy period. Excess moisture at this time can cause bulb rot. Moderate watering can be considered at the end of summer if exceptional drought delays vegetative recovery, with a contribution of 10 to 15 L/m² .

Regarding fertilization, Sternbergia is undemanding, preferring poor soils. A fertilizer low in nitrogen but high in potassium and phosphorus (e.g., 5-10-10 ) can be applied during periods of active growth (autumn and spring) to strengthen the bulbs and promote flowering. Any fertilization should be avoided during summer dormancy.

Mulching and seasonal protection

The main threat to Sternbergia bulbs is excess winter moisture. Rather than traditional organic mulch, which can retain moisture, a 5 to 7 cm thick mineral mulch (gravel, pozzolan) is recommended, to be applied as soon as the bulbs are planted.

In regions with very harsh winters (temperatures below -5°C or -10°C), an additional layer of protection of 8 to 10 cm of dry material (dead leaves, straw) can be added before the first frost. This protection should be removed gradually in spring and should not retain moisture. For potted cultivation in cold regions, wintering in a protected location where the temperature does not drop below -5°C is recommended.

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Detailed botanical and ecological characteristics

Understanding the identity and ecology of Sternbergia is fundamental to an informed professional culture.

Identification and taxonomy

The full scientific name of the most widely cultivated and commercialized species in France is Sternbergia lutea . It belongs to the genus Sternbergia and the botanical family Amaryllidaceae (Amaryllidaceae family). This plant is also known by vernacular names such as "autumn daffodil", "yellow autumn crocosm" or "harvest lady".

Detailed morphology

The bulb: Sternbergia has a typical Amaryllidaceae tunic bulb, protected by a thin brown tunic. For Sternbergia lutea, the average diameter of a mature bulb is 3 to 5 cm . Its shape is ovoid to elongated, with a marked point at the upper end, from which emerge the flower stalk and leaves. The external color is light brown to golden brown, while the interior is ivory white and firm. This robust bulb is suitable for professional handling and has excellent dry storage capacity.

Foliage: The leaves are long, narrow, and lanceolate, a deep dark green, reminiscent of crocus or narcissus. They are smooth, hairless, and generally between 10 and 20 cm long , with a width typically less than 1 cm. The foliage appears in autumn, simultaneously with or just after flowering, and persists throughout the winter, providing lasting visual interest. It only dies back and yellows in spring, marking the entry into summer dormancy. It is crucial to allow the foliage to yellow completely to allow the bulb to replenish its reserves for future flowering.

Flowers: Sternbergia flowers are a bright, vibrant yellow , often described as lemon or golden yellow. They are cup- or goblet-shaped, usually measuring between 2.5 and 7.5 cm in diameter. Each stem typically bears only a single flower, composed of 6 tepals (petaloid segments). The flowering plant reaches a height of 10 to 20 cm. The flowers are generally devoid of any perceptible fragrance. Flowering occurs in autumn, from September to November depending on weather conditions.

Geographical origin and natural habitat

The genus Sternbergia is native to the Mediterranean basin and the Middle East , extending from Spain to western and central Asia. Sternbergia lutea is spontaneous in these regions. Its natural habitat is characterized by a Mediterranean climate: long, hot, and very dry summers (up to five months of summer drought), and mild to moderately cold and humid autumns, winters, and springs.

Sternbergia lutea can tolerate winter temperatures as low as -6°C . It is naturally found between 200 and 1,000 meters above sea level, while other species such as Sternbergia colchiciflora can be found up to 2,300 meters. Sternbergia grows on stony, often calcareous soils in clearings, open meadows, woodland edges and rocky scree.

Hardiness and cold tolerance

Sternbergia is considered semi-hardy, generally tolerating temperatures down to -2 °C (-4 °F) . Some sources indicate hardiness down to -5 °C (-4 °F) or even -6 °C (-4 °F) for Sternbergia lutea. It is suitable for USDA Hardiness Zones 6 through 9. This corresponds to minimum temperatures ranging from approximately -17.8 °C (zone 7a) to +4.4 °C (zone 10b). It is important to note that winter moisture is often more damaging to these bulbs than direct frost.

Life cycle and longevity

Sternbergia lutea is a perennial bulbous plant. After flowering in autumn (September-October), the dark green foliage develops and persists throughout winter and spring. The plant goes into summer dormancy, with the complete disappearance of the foliage, and the bulbs survive thanks to their reserves.

As a perennial, Sternbergia lutea can remain in place for several years, forming lasting colonies and naturalizing if conditions are favorable. A planting can last up to 5 to 6 years before division is recommended.

Multiplication modes

The most effective and common propagation method in professional cultivation is the division of bulbils (offsets), small bulbs produced around the main bulb. Each mature bulb can produce 1 to 3 bulbils per year. These bulbils, once separated, can reach flowering size in 2 to 3 years under optimal conditions.

This method ensures faithful reproduction of the characteristics of the mother plant and faster growth than sowing. Propagation by seed is possible but very slow, with plants grown from seed taking 5 to 7 years to flower, making it less attractive for professional production.

Main cultivars and selections

For the professional market, it is important to know the main species and selections:

• Sternbergia lutea: The most widely cultivated species, recognizable by its bright yellow 3-4 cm flowers, its robustness and its flowering from early to mid-autumn. Its leaves often appear after the flowers.
• Sternbergia sicula: Distinguished by paler yellow, narrower leaves and smaller flowers than S. lutea, blooming in autumn.
• Sternbergia colchiciflora: More compact (7-10 cm), with spiral foliage and a fruit that emerges at ground level, autumn flowering.
• Sternbergia vernalis: Unique for its spring flowering (late winter/early spring), with evergreen foliage, allowing the sales season to be extended.
• Sternbergia clusiana: Larger and earlier flowers than S. lutea, flowering in autumn.
• Horticultural Selections: Large-flowered (calyx 4 cm or more) or very floriferous forms, often called 'angustifolia' or other large-flowered forms, are sought after for their visual impact.

Ornamental interest after flowering

The ornamental interest of Sternbergia after the autumn flowering lies mainly in its decorative foliage . The dark green, thin, upright leaves (10 to 30 cm long) appear in October-November and remain visible throughout the winter, providing a touch of greenery when other plants are dormant. This foliage persists until spring before yellowing and drying out. The fruiting, in the form of seed capsules, is discreet and has no notable ornamental interest.

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Advanced management and maintenance for professionals

Rigorous management and appropriate maintenance guarantee the health and productivity of your Sternbergia.

Expected performance in professional culture

Each Sternbergia bulb typically produces one to several flowers per season , depending on growing conditions. Flowering is concentrated over 2 to 3 weeks, between September and mid-October. Considering an optimal spacing of 10 cm, one can theoretically plant between 80 and 100 bulbs per m² for dense production. The standard commercial size of bulbs is generally 6/7, but size 10/12 is also available for immediate flowering.

Routine maintenance

Sternbergia care is relatively simple. Regular weeding is important, especially at the beginning of the growing season to avoid competition. No removal of faded flowers is necessary as they disappear naturally. It is crucial to allow the foliage to yellow and dry completely (usually 6 to 8 weeks after flowering ) to allow the bulb to replenish its reserves for the following year.

Dividing clumps is recommended every 4 to 5 years (some sources indicate 5-6 years) to maintain vigor and avoid overcrowding. This should be done during the dormant period, usually in summer or spring. Bulbs should be replanted immediately after division. For potted plants, repotting every 2 to 3 years is recommended to renew the substrate.

Parasites and common diseases

Although Sternbergia is generally hardy and rodent resistant, it can be prone to certain pests and diseases when grown professionally, especially in poor conditions:

• Viruses (especially narcissus mosaic): Cause discoloration and leaf deformation. They are mainly transmitted by aphids during the growing season.
• Narcissus fly: The larvae directly attack the bulbs, resulting in reduced or no flowering.
• Nematodes (nematodes such as Ditylenchus dipsaci): These microscopic worms parasitize bulbs, stems and leaves, which can weaken or kill plants.
• Botrytis (grey mold): Can develop in cases of excessive humidity or poor ventilation, especially on weakened fabrics.

Preventive and curative measures

Prevention is the key:

• Optimal soil drainage and avoidance of excess moisture, especially in winter.
• Exposure to full sun to limit fungus.
• Rigorous visual inspection of bulbs upon purchase and during division to avoid the introduction of contaminated plants.
• Control aphids through regular observation and appropriate treatments.
• In the event of viruses, systematically destroy affected plants and disinfect tools.
• In case of nematodes, destroy the affected plants and do not replant in the same place for at least 3 years .
• To combat the daffodil fly, practice strict crop rotation and eliminate suspect bulbs.
• For botrytis, ensure good ventilation and reduce watering.

Harvesting and storing bulbs

Bulbs are harvested at the end of the growing cycle, when the foliage is completely yellow and dry, usually in late spring/early summer (May-June), about 6 to 8 weeks after the leaves turn yellow. After harvesting, gently clean the bulbs, sort them (selecting healthy ones) and let them dry for 1 to 2 weeks in a dry, ventilated and shaded place, at a temperature of about 20-25 °C .

Professional bulb storage should be carried out under controlled conditions: temperature of 15-20°C, relative humidity of 50-60%, and good ventilation. Use trays, ventilated crates, or mesh bags (never airtight plastic) in layers of 2 to 3 bulbs maximum. Bulbs can be stored until replanting in late August/mid-September.

Vernalization needs

Unlike many bulbs, Sternbergia does not require strict vernalization (a prolonged cold period) to induce flowering. Rather, a warm, dry summer dormancy is crucial to stimulate the flowering cycle. It is recommended to keep the bulbs dry at a temperature above 20°C for 2 to 3 months in summer. The cool temperatures of a typical French winter are sufficient for its development.

Growing in pots or under cover

Growing Sternbergia in pots or under cover is perfectly possible:

• Pot Planting: Plant bulbs 5 inches (12.7 cm) deep and space them 4-6 inches (10-15 cm), or about 5 bulbs per 6-inch (15 cm) pot. Bulbs tend to migrate in depth each year.
• Substrate: Choose a very well-draining mix, for example a combination of neutral sphagnum peat moss, perlite, and a slow-release fertilizer. The optimal pH is between 6 and 7, with an organic matter content of around 40%.
• Watering: Keep the substrate slightly moist during active growth, but reduce watering significantly during dormancy.
• Under cover: Place containers in the open air on black polyethylene mulch. Light cover may be necessary to protect from excessive winter moisture, always ensuring good ventilation.

Health assessment and stress detection

Visual surveillance is essential:

• Healthy bulb: firm to the touch, with no soft areas, intact outer shell and uniform color (light to medium brown).
• Healthy roots: white and firm.
• Healthy foliage: bright green, without yellowing (chlorosis), spots or deformations.
• Deficiencies: Yellowing between the veins (iron, magnesium), pale leaves (nitrogen), burnt edges (potassium), necrotic spots (calcium, boron).
• Water stress: Wilted foliage (lack of water), premature yellowing of lower leaves (excess water), crown rot (persistent humidity).
• Diseases: Monitor for rapid wilting, browning of tissues and bacterial exudates, especially for Erwinia amylovora.

Maintain a soil pH between 6.0 and 7.0 for optimal nutrient absorption. A three-year crop rotation is recommended to prevent pathogen buildup.

Notable features

• Toxicity: The Sternbergia bulb is toxic, enough to deter rodents, but no cases of serious poisoning in humans or livestock have been documented. However, it is advisable to avoid accidental ingestion and to wear gloves when handling large quantities.
• Protected Status: Sternbergia is a species protected by CITES (Convention on International Trade in Endangered Species of Wild Animals). Its commercialization, particularly export, requires a specific certificate.
• Pollinator Attraction: The bright yellow flowers of Sternbergia are visually attractive to pollinators, providing resources (nectar and pollen) in autumn when they become scarce. The flower shape is typical of those pollinated by bees and other diurnal insects.

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To summarize: Our Sternbergia bulbs

Sternbergia is an ideal bulbous species for floriculturists and communities looking for an original, long-lasting and undemanding autumn flowering. Thanks to its tolerance to dry soils, its rapid naturalization capacity and its natural resistance to rodents, it fits perfectly into landscaping projects or specialized productions. Floriverse , a specialist wholesale supplier of Sternbergia bulbs, offers you calibrated, robust bulbs from certified nurseries and packaged for professional cultivation. To obtain dense and perennial floral carpets, a density of 50 to 100 bulbs/m² is recommended. Planting in summer (July-August) ensures vibrant flowering from September to October. Choosing Floriverse as your specialist wholesale supplier of Sternbergia bulbs means ensuring reliable technical support, a responsive sales department and available stocks adapted to your volumes. Whether for landscaping, flower meadows or small series of cut flowers, you can buy Sternbergia bulbs with complete peace of mind. We provide you with homogeneous batches, rigorously sorted, with excellent conservation power. Trust Floriverse , your specialist wholesale supplier of Sternbergia bulbs , to buy Sternbergia bulbs in full compliance (CITES species) and maximize your results in the field. Don't wait any longer to buy Sternbergia bulbs and enhance your autumn with a unique bloom.