Untreated Oxalis deppei Iron Cross flower bulbs size 5/+ (3790500) for individuals

Order your professional Oxalis bulbs

Floriverse, a specialist wholesale supplier of Oxalis vegetable bulbs , offers a varietal selection adapted to the requirements of professionals. Buying your Oxalis bulbs means accessing professional quality, from specialized nurseries. Our bulbs are available in organic, untreated or conventional cultivation, according to your needs. Take advantage of our dedicated technical support and a responsive sales department to assist you. Our prices are direct from producers , with decreasing rates according to volumes . Delivery is fast and careful throughout France . You also benefit from personalized advice to help you succeed in your cultivation. Order your quality bulbs now or request a free quote from our specialized team.

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Wide range of Oxalis flower bulbs

We offer a wide range of Oxalis bulbs available in organic , untreated or conventional cultivation, depending on your needs and preferences. Our offer includes the varieties Oxalis triangularis , deppei , tetraphylla , adenophylla , regnelli , lasiandra and versicolor . For professionals looking for a sustainable and aesthetic solution, we also offer organic Oxalis flower bulbs , grown without chemical inputs.

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Oxalis cultivation in France: analysis of the cut flower market

The cut flower market in France has significant potential but remains dominated by imports (80 to 85% of volumes). National production amounts to approximately 183 million stems , concentrated in the PACA and Pays de la Loire regions (83% between them). Only 400 farms are dedicated to cut flowers out of more than 2,700 ornamental horticultural farms.

In this context, Oxalis is still little represented as a cut flower. It does not appear among the dominant species (peony, anemone, gerbera, rose, ranunculus), but its interest is growing for original floral compositions. The species Oxalis triangularis , for example, is appreciated for its colorful and decorative foliage.

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Distinction between organic and conventional market

The Oxalis bulb market is divided into two main segments:

• Organic bulbs : like the Oxalis Deppei Iron Cross BIO , these bulbs meet a growing demand for environmentally friendly crops. They are more expensive, but sought after by horticulturists looking for ecological differentiation.
• Conventional and untreated bulbs : Offering a wider variety selection, this range includes highly sought-after varieties. Some growers also offer "untreated" bulbs, without post-harvest fungal or insecticide treatments, to meet intermediate demand.

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Opportunities for the development of the Oxalis cut flower market

Oxalis has interesting characteristics that make it stand out in the world of cut flowers:

• Distinctive aesthetic appearance : clover or butterfly-shaped foliage, intense colors (purple, pale pink, white), fine flowering.
• "Local" argument : opportunity to relocate part of the production of cut flowers with a species still rare on the French market.
• Dual use : Oxalis can be used as a decorative foliage plant and as a short-stemmed flower.

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Technical considerations for floriculturists

• Growth cycle : Oxalis goes dormant in winter. Reducing watering and cutting the stems back to the ground are recommended.
• Soil : rich, light, well-drained.
• Exposure : filtered sun to partial shade.
• Multiplication : by division of clumps, simple to implement to optimize production.

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Our commitments for professionals – Wholesale sale of Oxalis flower bulbs

We offer a simple and seamless agricultural supply , thanks to a network of specialized producers and adapted professional logistics. All our Oxalis flower bulbs come from expert nurseries , offering consistent professional quality .

Our responsive sales department is committed to providing a personalized quote within 48 hours , as well as dedicated technical advice . During the season, delivery within 15 days is guaranteed throughout France. It is also possible to reserve your volumes in advance to guarantee varietal availability.

All our Oxalis bulbs are offered at producer prices , with unbeatable value for money and a sliding scale of prices depending on the volume . Whether you are a wholesaler, nurseryman or florist, our platform supports you with dedicated technical support and a complete technical itinerary to ensure your cultivation is a success.

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Botanical Characteristics and Varietal Diversity

Taxonomic Classification and Species Richness

The botanical genus Oxalis, belonging to the Oxalidaceae family and the Oxalidales order, is remarkably rich, comprising between 800 and 900 species of herbaceous plants. This diversity makes Oxalis the largest genus in its family, offering cultivation professionals a wide range of specimens suitable for a variety of uses. Generally recognized for their thin, leafy stems reaching 30 to 40 cm , and their leaves composed of three heart-shaped leaflets that fold at night or in cloudy weather, Oxalis display flowers with colorful petals – yellow, pink, or white – and fruit in capsules containing small seeds. Although widespread worldwide, with a high concentration in tropical and subtropical America, as well as in Asia and Africa, Oxalis are mainly cultivated in France as ornamental houseplants.

Areas of Origin and Climatic Adaptability

The geographical origin of bulbous Oxalis species is varied, with many originating from South America, including Argentina, Chile, and the Andean region, as well as South Africa. The example of Oxalis adenophylla , native to the mountainous regions of Argentina and Chile in the Andes Mountains, perfectly illustrates their adaptability. This alpine species thrives naturally on rocky and sloping areas, up to 3000 meters above sea level in its natural habitat, testifying to its remarkable hardiness. Oxalis adenophylla is adapted to a temperate to Mediterranean climate, withstanding winter temperatures down to –20.5 °C (USDA Zone 6B) , thanks to the dormancy of its bulb during the winter. The ideal biotope for Oxalis is characterized by light, well-drained, humus-rich soils , often stony or rocky, and it typically grows on slopes, embankments, scree, rock gardens, or in open alpine meadows.

Morphology of Reserve Organs

Oxalis develop various underground structures, mainly bulbs , but also rhizomes and tubers depending on the species. These reserve organs are crucial for the survival of the plant during unfavorable periods and for its propagation. For some species such as Oxalis triangularis , the bulbs are described as "tiny immature pine cones". It is worth noting that Oxalis versicolor has a reversed growth cycle , flowering in winter and entering dormancy in summer, a physiological peculiarity essential for marketing professionals. The precise dimensions and colors of the bulbs vary considerably according to the species, requiring specific documentation for each taxon traded.

Leaf Characteristics and Nyctinastic Behavior

The foliage of Oxalis offers a major ornamental interest, persistent and decorative well beyond flowering. In Oxalis triangularis , the leaves are composed of three triangular leaflets, reminiscent of a clover, with downward-facing tips, sometimes evoking a heart or a butterfly. Each leaf is carried by a petiole rising from the tuberous rhizome. The coloration is a strong point: Oxalis triangularis comes in purple, almost black, reddish or green , offering a varied aesthetic palette. A distinctive feature is their nyctinastic behavior : the leaves open at sunrise and close at sunset, but also in response to mechanical stimuli such as shocks or wind, constituting a natural protection system. This visual dynamism makes Oxalis triangularis particularly attractive for use in indoor pots or landscaping.

Floral Structure and Color Palette

Oxalis flowers are star-shaped, composed of five petals fused into a tube at the base and surrounded by five free sepals, presenting a central symmetry. They can be solitary or gathered in umbels on long, flexible peduncles, giving an aerial appearance. Generally small and delicate, they measure between 3.5 and 11 mm in diameter . Oxalis triangularis, for example, produces small white flowers contrasting with its purple foliage. The color palette is vast, including white, pink, yellow, sometimes red or mauve . Species such as Oxalis versicolor are distinguished by their bicolored flowers, white and red. Flowering is often abundant and can extend over several seasons, with Oxalis triangularis flowering for example in spring, summer and autumn. Oxalis do not generally give off a noticeable fragrance.

Dimensions and Vegetative Architecture

At maturity, the average height of Oxalis generally varies between 15 and 40 cm depending on the variety. Their general habit is often ground-hugging and creeping , with a tendency to spread quickly. Specific varieties offer targeted heights: Oxalis triangularis (Crimson Clover) reaches 20 to 30 cm with an upright habit, while its subspecies papilionacea Atropurpurea is more compact (15 cm). Oxalis versicolor and Oxalis adenophylla are particularly low, reaching only 10 cm, and Oxalis deppei (False four-leaf clover) stabilizes around 20 cm. Clumps of Oxalis can spread up to 50 cm in width , providing excellent ground cover.

Reproductive Biology and Sustainability

Oxalis are perennial plants , meaning they persist for several years. Their life cycle includes seed germination or development from bulbs, followed by leaf growth and flowering. After flowering, slightly hairy fruits develop, bursting open to disperse their seeds, ensuring efficient propagation. A key phase is winter dormancy : the plant loses its foliage outdoors or reduces its growth indoors, conserving its resources before a vigorous recovery in spring with the lengthening of days. Thanks to their perennial nature and ability to regenerate via bulbs, a well-maintained planting can persist for many years.

Commercial Range and Varietal Selection

The French professional market benefits from a wide selection of Oxalis cultivars, among which Oxalis Triangularis stands out. Its triangular leaves fold at night and come in varieties such as 'Sanne', 'Amber' and 'Mijke' . Oxalis Iron Cross (Oxalis tetraphylla/deppei), known as "lucky clover", has green leaves with a distinctive burgundy-brown pattern and delicate white or pink flowers, liking poor soils and tolerating sun and shade. Oxalis Adenophylla ("Silver Shamrock" or "Chilean shamrock") is prized for its silvery foliage and abundant pink flowers in late winter, ideal for rock gardens. Other cultivars such as Oxalis Regnelli or Oxalis Lasiandra offer varied options in terms of price and rarity. With over 500 species, the diversity of foliage colors (green, burgundy, purple) and flowers offers a wide range for professional decorative needs.

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Production Parameters and Cultural Management

Composition and Preparation of the Substrate

Oxalis thrive in well-drained, light to medium-textured soil , ideally slightly acidic (pH between 6.0 and 6.5) . A mixture of 70% standard potting soil, 20% peat moss, and 10% sand or fine gravel is recommended. Efficient drainage is crucial to avoid waterlogging, which can cause corm rot.

Exposure and Temperature Management

Bright but indirect light is ideal for optimal development of Oxalis. Intense direct midday sun in summer should be avoided. Indoors, an east- or west-facing window is ideal; outdoors, partial shade to full sun is preferable, with protection from harsh rays in summer. Optimal temperatures are between 15°C and 35°C .

Planting Cycle Planning

Spring planting (May to June, after the last frosts) and autumn planting (October to November) are the preferred periods. Late winter planting is also possible.

Implementation Techniques

Bulbs are generally planted at a depth equal to 3 times their height, or about 8 cm for most varieties. The recommended spacing varies from 10 to 20 cm between bulbs. For a rapid ground cover effect, a density of 30 to 40 bulbs/m² is recommended.

Irrigation and Fertilization Protocols

During the growing season (spring-summer), regular watering is necessary, allowing the soil surface to dry slightly between applications. Water should drain through the drainage holes. During the dormant period (autumn-winter), watering should be significantly reduced or even stopped to prevent rot. Moderate humidity (40-60%) and a temperature between 15.5°C and 24°C are optimal. A balanced fertilizer, applied once a month during growth, or a surface dressing of compost in spring, will support vigor.

Cold Tolerance and Protection Strategies

The hardiness of Oxalis varies greatly depending on the species. Most are cold-sensitive, generally tolerating temperatures down to about 10°C (50°F) before the foliage dies back. However, some species, such as Oxalis triangularis, can survive in USDA Zone 6 , with minimum temperatures between -23.3°C (-14.8°F) and -17.8°C (-6.8°F). For cultivation in France, where Oxalis can be grown outdoors in USDA Zones 6 to 10 , winter protection is often necessary in cold regions. This may involve treating the plants as houseplants, digging up and storing the corms, or applying a thick winter mulch (8 to 15 cm (3 to 6 inches) of straw or dead leaves) to protect the bulbs in the ground. For storage of dug-up bulbs, a temperature between 5 and 10°C (41 and 50°F) in a dark, dry place is recommended.

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Multiplication and Propagation Strategies

Vegetative Reproduction Methods

Oxalis triangularis , or "False Shamrock", propagates preferentially by dividing its corms or bulbs , a very effective method for rapid reproduction. The process involves removing the plant, separating the main corm into small sections and replanting them. In addition, Oxalis triangularis naturally produces bulbils , small secondary bulbs: a single mother bulb can generate about 20 bulbils , constituting the main source of multiplication and allowing efficient and rapid propagation. For commercial production, this multiplication capacity of about 1:20 per growth cycle is a major asset, allowing rapid stock increases.

Impact of Caliber on Performance

Bulb size has a direct influence on vigor and flowering. Oxalis corms larger than 1.5 cm in diameter are preferred in professional production because they guarantee optimal flowering from the first season. Small corms (< 1 cm) produce less vigorous plants and later or less abundant flowering initially. Bulb division is recommended every 1 to 2 years , during dormancy, to maintain vigor and manage density. A single planted bulb can produce a high density of corms in two years.

Absence of Vernalization

It is important to note that Oxalis bulbs generally do not require vernalization , i.e., a specific cold period, to induce flowering. Unlike many conventional bulbs, Oxalis are "tender" bulbs that flower naturally when growing conditions are favorable, including temperate temperatures and sufficient light. Flowering generally appears 8 to 10 weeks after planting the bulbs , without prior cold treatment. This greatly simplifies their management for professionals, without the constraints of specific cold storage.

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Livestock Management and Yields

Routine Maintenance in Production

Maintaining Oxalis in professional cultivation involves regular watering (1 to 2 times per week during growth) , manual weeding every 2 to 3 weeks , and weekly removal of faded flowers to encourage continued flowering. Lifting and dividing the bulbs is not systematic every year but is recommended every 2 to 3 years during dormancy to avoid soil depletion and maintain density.

Specialized Seasonal Protection

Regarding seasonal protection, most Oxalis are not very hardy and sensitive to frost . In regions with mild winters, the bulbs can remain in the ground. In cold areas, it is essential either to remove the bulbs in the fall to overwinter them in a dry, frost-free place (5-10°C), or to protect the stump with a thick winter mulch of 8 to 15 cm . For potted crops, bringing the containers indoors as soon as temperatures drop below 10-12°C is imperative.

Phytosanitary Surveillance

Oxalis can be prone to fungal diseases such as rusts (Puccinia spp.) , manifested by rusty pustules on the leaves, weakening the plant. Careful bulb selection , crop rotation (3-4 years) , optimal growing conditions (good ventilation, avoidance of excessive humidity), and weekly monitoring are key preventative measures. Curative treatments include removal of infected parts and application of registered fungicides, as well as preventative copper treatments .

Yield Optimization

In professional cultivation, a density of 10 to 15 bulbs per m² (spacing of 8-10 cm) is recommended for a good balance between leaf development and dense flowering. A mature bulb can produce on average 3 to 5 flowering stems , bearing 1 to 3 flowers each, or approximately 3 to 15 flowers per bulb during a season. This represents an estimated yield of 40 to 180 flowers per m² per flowering cycle, influenced by light (medium to high indirect), humidity (40-60%), temperature (15-24°C) and soil quality.

Forcing Techniques

Oxalis is also suitable for forcing for off-season flowering . After a wintering period (late October/November), the tubers can be repotted and placed in a heated greenhouse or indoors with a constant temperature of 18 to 22°C and adequate lighting. Forcing allows for the first flowerings to be obtained in 4 to 6 weeks , with staggered planning for continuous production.

Managing Extreme Conditions

In case of prolonged drought , increase the frequency of watering during flowering, install a drip system, and apply a 5-7 cm plant mulch to conserve moisture. Enriching the substrate with 20-30% perlite or vermiculite improves water retention. In the face of harsh winters , protection against frost is imperative. An additional 8-10 cm mulch for crops grown in the ground, or storing the bulbs in a dry, dark place between 10 and 15°C during dormancy, are effective measures. Growing in pots (minimum 15-20 cm deep) makes moving them easier in case of frost.

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Ornamental Applications and Markets

Post-Flowering Foliage Enhancement

After flowering, the Oxalis retains major ornamental interest thanks to its unique, often trifoliate, clover-shaped foliage. The Oxalis triangularis, with its purple to intense violet foliage, offers a persistent visual contrast. The foliage density (up to 200 leaves/m² for compact varieties) allows for a prolonged groundcover effect, ideal for ground cover. The fruiting, although discreet (capsules of 3 to 5 mm), is of interest for propagation and conservation.

Integration into Landscaping

Oxalis are very versatile in professional landscaping, ideal for flower beds (dense ground cover) , borders (adds color) , and rockeries (species adapted to draining substrates) . They tolerate various exposures, from sun to partial shade. Oxalis are known for their ability to naturalize , spreading quickly by bulbs, tubers, bulbils or spontaneous seedlings. A plot of 30 bulbs/m² can become denser to 80 to 100 plants/m² in 2 years , and some species can cover up to 80% of the surface in 3 years in disturbed environments. This ability, although practical for low-maintenance areas, requires monitoring in sensitive natural environments.

Suitability for Public Spaces

Oxalis is particularly suitable for public spaces thanks to its ease of maintenance , its resistance and its long-lasting flowering. The plant adapts to various soils and exposures, reducing constraints for green space services. Its bulbs store water, limiting the need for watering once established. Its rapid growth prevents the development of weeds, thus reducing the burden of weeding. It flowers abundantly from May to September (up to 5 months) , offering prolonged visual appeal. Installation by bulbs is practical for large spaces, and their hardiness allows a perennial installation. An estimated saving in maintenance time of more than 30% compared to classic annuals makes it a cost-effective and aesthetic solution.

Potential in Cut Flowers

Oxalis is of limited interest as a cut flower due to its thin, flexible and relatively short stems (15 to 30 cm). Its vase life is also limited, generally 3 to 5 days , because the stems wilt quickly after cutting. Oxalis do not give off a noticeable fragrance. Their advantage lies in the elegant shape and the diversity of colors of their flowers, as well as the ornamental foliage, particularly suitable for small arrangements or rustic bouquets . The fragility of the stems is a limitation to consider for handling and transport.

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Ecological Considerations and Associations

Attractiveness for Pollinators

Oxalis species are known for their high attractiveness to various pollinators , including honeybees (Apis mellifera) , due to the rich nectar and pollen content of their flowers. Bees are very active, visiting an average of 20 flowers per minute for pollen and 18 flowers per minute for pollen and nectar combined. Approximately 52 to 53% of visits are dedicated to nectar collection , and 46 to 47% to pollen. This activity contributes significantly to fruiting (approximately 24% for O. barrellieri). Peak attractiveness occurs in spring and early summer . The installation of hives near Oxalis plots is therefore recommended to optimize pollination and fruit and honey production.

Optimal Plant Companionship

For complementary aesthetic and cultural effects, Oxalis are ideally combined with plants with similar soil and light requirements. Alyssum (Alyssum spp.) and rock cress (Arabis spp.) provide bright borders and appreciate well-drained soils. Stonecrops (Sedum spp.) and starwort (Stellaria spp.) are also good options. Ferns provide a graphic contrast, especially with purple-leaved varieties of Oxalis, which prefer shade to partial shade. Heuchera (Heuchera spp.) offer a diversity of foliage that contrasts perfectly with Oxalis triangularis. It is recommended to favor low plants (5 to 30 cm high for most Oxalis) and to space out companion plants to avoid competition.

Cultural Rotation Recommendations

Although there are no explicit crop rotation recommendations for Oxalis in the sources, it is prudent to avoid replanting Oxalis in the same location for 3 to 4 years to prevent pathogen buildup. Intercropping with legumes or clean-up crops may be beneficial.

Toxicological Precautions

Oxalis contains oxalic acid and oxalate salts , including calcium oxalate. It is considered moderately toxic to dogs and may pose a mild to severe risk to cats depending on the amount ingested. Ingestion may cause gastrointestinal disturbances. For humans, excessive consumption can lead to calcium deficiency, digestive disturbances, and kidney problems. In high doses, kidney problems (stones), muscle problems (tremors, cramps) , and general weakness are possible. The bitter taste of the plant acts as a natural protective factor, limiting the risk of serious poisoning. It is essential to mention these toxicological characteristics on your website.

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Harvesting and Marketing Techniques

Bulb Harvesting Protocols

Professional Storage Conditions

For storage, the bulbs should be kept dry, between 10°C and 15°C , in a cardboard box or breathable paper bag, possibly in vermiculite or dry sand, for a dormant period of 2 to 3 months . Replanting indoors is possible at the end of February/beginning of March, and outdoors from April after the frosts. After planting, allow approximately 8 weeks for the stems to emerge .

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To summarize: Our Oxalis triangularis bulbs

At Floriverse, we provide professionals with a rigorous selection of Oxalis triangularis bulbs , suitable for ornamental and cut flower production. As a specialist wholesale supplier of Oxalis bulbs , we guarantee a constant supply of quality bulbs from certified nurseries. Buying Oxalis triangularis bulbs from us means benefiting from high-performance, high-yielding plant material that is tolerant to major diseases. Our varieties, such as Oxalis triangularis 'Sanne', 'Amber' or 'Mijke', are selected for their decorative foliage and attractive night-time behavior. Our bulbs are packaged for optimal preservation and delivered quickly throughout France. We support each order with personalized technical support and advice sheets. Buying Oxalis triangularis bulbs also means access to producer prices with volume discounts. Floriverse, a specialist wholesale supplier of Oxalis bulbs , is committed to providing responsive service, professional advice, and products tailored to modern horticultural requirements. Reserve your quantities now to secure your growing plan. Whether you are a horticulturist, nurseryman, or florist, buying Oxalis triangularis bulbs with Floriverse means choosing the expertise and reliability of a specialist wholesale supplier of Oxalis bulbs .