Order your professional Iris bulbs
Floriverse, a specialist wholesale supplier of Iris bulbs , offers a rigorous selection for demanding florists. Buying your Iris bulbs guarantees you plants suitable for growing cut flowers as well as for landscaping. Our products come from specialized nurseries recognized for their know-how. You benefit from professional quality , competitive producer prices , dedicated technical support and fast and careful delivery throughout France . Our references are selected for their varietal resistance , their high yield and their tolerance to diseases . We support you with personalized advice throughout your production season. Order your quantities of Iris bulbs now or request your free quote from our responsive sales department.
Botanical and ornamental characteristics of Iris
Iris belongs to the Iridaceae family and includes approximately 310 recognized species according to Plants of the World Online. These hermaphroditic perennials are distinguished by their spectacular spring blooms and long-lasting, structuring foliage.
The ensiform, sword-shaped foliage is a major visual asset with its leathery texture and glaucous green to grayish green color. The leaves measure 2 to 5 cm in width and reach 30 to 90 cm in length depending on the variety, forming upright and graphic clumps.
The flowers consist of six lobes : three drooping outer sepals called "falls" and three upright inner petals called "standards". The diameter varies from 6 to 12 cm with flower stem heights between 15 cm and 70 cm depending on the species. The extensive color palette includes blue, purple, yellow, white, often with two-tone shades or contrasting veins.
Varietal classification and professional selection
Irises are divided into two main categories according to their underground storage organ: rhizomatous irises and bulbous irises .
Rhizomatous iris
Developed from fleshy horizontal rhizomes, they include the German, Japanese, Louisiana, Siberian, and Marsh Iris. The rhizomes of the tall bearded irises are larger than those of the Siberian irises, thinner, and fibrous.
Bulbous iris
Coming from true tunic bulbs, such as Dutch Iris and Dwarf Iris, they require a planting depth of 10 to 13 cm .
French reference cultivars
- 'Mamy Framboise' (V. Fur / B. Laporte, 2004): bright magenta tones, fast growth and high floridity
- 'Rive Gauche Paris' (V. Sazio, 1993): intense, strong colors, important sire in French pedigrees
- 'Bouschet' (Laporte, 2006): descendant of 'Rive Gauche' with accelerated growth
- 'Blue Ribbon' (J. Cayeux, 1997): exceptional intense blue, qualitative reference
Classification by height
- Dwarf bearded iris: 15 to 20 cm
- Standard dwarf bearded iris: 20 to 38 cm
- Bearded intermediate iris: 40 to 70 cm , early flowering and wind resistance
- Large bearded iris: 68 to 100 cm
- Dutch iris: 50 to 60 cm , bulbs 5 to 7 cm in size
Planting calendar and techniques
The optimal planting period is from June to October , with an optimum in July-August . This window allows for effective rooting before winter and guarantees optimal flowering the following spring.
The soil temperature should not be lower than 10°C at the time of planting to promote rooting and reduce fungal risks.
Planting depths
- Standard Iris bulbs: 5 to 8 cm deep , tip facing upwards
- Reticulated irises: 10 to 12 cm deep
- Recommended spacing: 15 to 20 cm between bulbs, 25 to 40 cm for bearded irises
Cultural requirements and production conditions
Soil and drainage
Irises require very well-drained soil to prevent rotting of underground organs. The ideal sandy-loam texture facilitates water flow. The optimal pH is between 6.5 and 7.5 . In heavy soil, incorporate 20 to 30% coarse sand and organic matter. Planting on a 10-15 cm mound is an effective preventative measure.
Exposure and light requirements
Full sun with a minimum of 6 hours of direct sunlight ensures abundant flowering. A light deficit leads to a significant decrease in flowering and stretching of the plants.
Fertilization program
Favor balanced but low-nitrogen NPK formulas such as 6-8-12, 7-5-12 or 4-6-10 . When planting, incorporate 100 g/m² of complete organo-mineral fertilizer. For annual maintenance, add 75 g/m² in spring, possibly split into two applications.
Water management
After planting, 2 to 3 waterings ensure recovery. Subsequently, occasional watering in the event of prolonged drought is sufficient. Absolutely avoid excess water, which promotes rhizome rot.
Health protection and management of bioaggressors
Main diseases
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Soft rot of rhizomes (sclerotinia): potential losses of 10 to 80% under favorable conditions
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Leaf spots and rust : prevention by spacing and destruction of affected leaves
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Bacterial rot (Erwinia carotovora): strict elimination of affected plants
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Viruses : use of healthy material and fight against vectors
Common pests
- Rhizome borer
- Aphids
- Slugs and snails
Preventive strategies
- Crop rotation of 3 to 4 years
- Floor disinfection
- Optimal drainage
- Encouragement of natural auxiliaries
Flowering calendar and seasonal management
Spread of flowering
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Winter (January-March) : Iris of Algiers, flowering for 4 to 6 weeks
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Early spring (February-March) : Iris reticulata and danfordiae, 2 to 3 weeks
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Spring (April-June) : Dwarf irises from April, bearded irises from May to June (3 to 5 weeks per clump)
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Summer (June-August) : Marsh irises and everbearing varieties
Massive flowering is generally observed in the third year after planting, when the clump is well established.
Vernalization
Bulbous irises require 10 to 14 weeks at 1°C to 5°C. Rhizomatous irises require 6 to 8 weeks at 7°C for optimal flowering.
Business applications and career opportunities
Cut flower
Iris x hollandica has an ideal stem length of 50 to 70 cm with excellent rigidity and a vase life of 5 to 10 days . Iris germanica offers stems of 40 to 90 cm with a pleasant fragrance but a shorter life of 3 to 7 days .
Landscaping
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Flowerbeds : density of 5 to 7 plants/m², spacing 30 to 40 cm
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Borders : dwarf and intermediate varieties (20 to 40 cm)
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Rock gardens : Drought-resistant dwarf irises
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Naturalization : excellent capacity, doubling of clumps in 4 to 5 years
Production yield
In professional cultivation, expect 6 to 16 flower stems per m² per year , with generally 1 to 2 stems per adult rhizome . Recommended density: 6 to 8 plants per m² .
Additional technical aspects
Multiplication and longevity
Iris can live up to 20 years with proper care. Division of clumps is necessary every 3 to 4 years to maintain vigor. Divided rhizomes reach flower maturity in 2 to 3 years .
Hardiness
Exceptionally hardy down to -30°C to -20°C (USDA zones 4 to 5). Most garden irises can withstand temperatures down to -34°C under optimal drainage conditions.
Off-season forcing
Possible in a greenhouse with prior storage at 32°C for 4 weeks , then 20°C . Cultivation at 10-16°C in a greenhouse for flowering in 10 to 12 weeks .
Health precautions
Caution: Iris is toxic to humans and pets. All parts, especially rhizomes and bulbs, contain irritants. Gloves are recommended.
Ecological interest and biodiversity
Irises are effective pollinators due to their floral structure, which promotes cross-pollination. The main visitors include bees, bumblebees, butterflies, and specific flies. Peak pollination activity occurs between April and June , particularly in May.
Their contribution to biodiversity extends from the end of March to the beginning of July depending on the species, providing a valuable nectar resource over a long period.
To summarize: Our Iris bulbs
As a specialist wholesale supplier of Iris bulbs , Floriverse offers you a complete range of bulb varieties suitable for efficient professional cultivation. Our Dutch, dwarf and reticulated Irises are selected for their floridity, disease tolerance and hardiness down to -30°C. Thanks to their excellent vase life and staggered flowering, they are a strategic choice for cut flower growers and specialist horticulturalists. Buying Iris bulbs from Floriverse means opting for consistent quality, uniform sizes and technical expertise to improve your profitability. Our team also advises you on the best planting practices (depth, density, suitable fertilization) to optimize rooting and flower production. Whether you are aiming for spring flowering in the open field or forcing in a greenhouse, our references meet all production constraints. With stocks available in season and controlled logistics, buying Iris bulbs has never been easier. Trust Floriverse, your specialist wholesale supplier of iris bulbs, to ensure the success of your campaigns. Reserve your batches today and enjoy the assurance of professional support. Buying iris bulbs from us means choosing technical and commercial security. As a specialist wholesale supplier of iris bulbs , we support each customer with rigor and responsiveness.
