Untreated flower bulbs Arum italicum marmoratum size 6/+ (3200500)

Quick read / the essentials on our Arum Italicum bulbs

Discover the exclusive benefits of working with a specialist wholesale supplier of flower bulbs for your Arum italicum plantings. This perennial plant, native to the Mediterranean basin, is known for its marbled ornamental foliage, its spring flowering and its decorative fruits in summer. By choosing Floriverse , you are opting for technical expertise and a rigorous selection of tubers (corms), adapted to the requirements of professional floriculture in France. Arum italicum is perfectly established in shaded or semi-shaded areas, with proven hardiness down to -10°C, or even -15°C under protection. Thanks to its reverse seasonal cycle – foliage in winter, flowering in spring – it offers a unique decorative value and differentiation on the cut flower market.

For your horticultural projects, buying Arum Italicum bulbs from Floriverse guarantees you direct access to professional grades, packaged according to your needs. Our batches of bulbs come from conventional, organic, or untreated sources, to adapt to all technical approaches. Whether you're targeting the organic market, cut flowers, or institutional landscaping projects, our specialist wholesale supplier of flower bulbs offers you complete solutions: fast delivery, customized quotes, and proven cultivation methods.

Professionals can purchase Arum Italicum bulbs in the fall for flowering the following spring, with optimal densities of 6 to 11 bulbs/m² depending on use. By working with a specialist wholesale flower bulb supplier such as Floriverse, you benefit from rigorous traceability, regular stock availability, and technical support at every stage of your cultivation.

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Wide range of Arum Italicum flower bulbs

We offer a wide range of Arum Italicum flower bulbs , a perennial plant sought after for its spectacular flowering and decorative interest all year round. Our offer is aimed exclusively at professional floriculturists looking for performance, consistency and horticultural quality.

• Certified organic bulbs : from environmentally friendly sources, suitable for certified production
• Untreated bulbs : no post-harvest treatment, for more natural technical routes
• Conventional bulbs : grown by specialist growers to guarantee size, consistency and yield

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Arum Italicum Cut Flower Market Analysis for Professionals

Current Market Overview

The French market for cut Arum flowers remains dynamic, supported by constant demand in the premium segments. Arum italicum , with its graphic spathe and red berries in summer, appeals to florists looking for differentiating varieties.

Data from the Market News Network (RNM) shows stable prices for French production, with batches of 10 stems selling for €14.00 excluding VAT. Dutch imports show strong seasonality, reaching up to €24.00 excluding VAT during periods of high demand.

Distinction between Organic and Conventional Market

While the conventional market remains dominant, the growth of the organic segment opens up interesting prospects. Organic Arum italicum bulbs meet growing demand from institutional buyers and specialist channels. At the same time, untreated bulbs are proving to be a technical and economic compromise for diversifying one's offerings while meeting environmental expectations.

Technical and Commercial Characteristics

• Flowering period: April to May
• Vase life: excellent, valued by florists
• Soil type: rich, fresh, well-drained
• Advantages: decorative winter foliage, summer berries, long shelf life

Opportunities and Perspectives for Floriculturists

• Premium positioning : higher valuation of French productions
• Varietal potential : growing interest in alternative colors such as Arum Summer Sun
• Logistical interest : optimal planting period (September-November) and flowering period (spring)
• Organic and untreated trend : a segment to follow to stand out

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Our sales arguments for Arum Italicum flower bulbs

We provide Arum Italicum flower bulbs at producer prices , directly from specialist nurseries renowned for their agronomic rigor. Thanks to a simple and fluid agricultural supply , you benefit from careful delivery throughout France within 15 days (in season), with the possibility of reserving your batches in advance .

Our responsive sales department will provide you with a personalized quote within 48 hours, along with free technical advice and a comprehensive technical itinerary . As floriculture specialists , we provide dedicated technical support to maximize your crop performance.

Available for sale online or wholesale , our Arum Italicum bulbs combine professional quality and unbeatable value for money , with decreasing prices depending on volume . An ideal solution for demanding flower farms.

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Botanical and genetic characterization of the species

As a horticulture or landscaping professional in France, selecting high-performing plant species that meet market requirements is essential. Arum italicum , scientifically known as Arum italicum Mill. , is a perennial tuberous plant belonging to the botanical family Araceae , or Aroids. Native to the Mediterranean basin, western and southern Europe, as well as North Africa, particularly Algeria, Morocco, and Tunisia, this species has become perfectly naturalized in many temperate to warm regions. Its native presence extends from Albania to Turkey, including Corsica, France, Italy, Spain, and many other territories. Arum italicum has a typical chromosome count of 2n = 84 , although some subspecies may have 2n = 56. The genus Arum has 27 recognized species , and the family Araceae has about 143 genera.

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Morphology and development of underground storage organs

Unlike a typical tunic bulb or rhizome, Arum italicum develops from a corm . This technical peculiarity is fundamental for professionals. The corm, which can reach about 4 cm in diameter for the main tuber, gives rise to numerous small attached tubers. These corms give the plant a clumping habit , allowing the gradual formation of groups of plants. The growth rate of these corms is rapid , a valuable piece of data for production planning and crop expansion. Although the precise dimensions of the corms are not always detailed in the available sources, they are proportional to the development of the entire plant, which generally reaches a height of 30 to 46 cm , with a similar spread. Corms are ideally planted throughout the autumn for flowering expected during May. Foliage generally emerges in late September or early October .

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Decorative foliage and reverse seasonality

One of the major assets of Arum italicum for landscaping and professional sale is its spectacular foliage and reverse seasonality . The leaves are deeply sagittate , that is, arrow-shaped, with a base marked by two lobes and a tapered apex. Attached to long petioles emerging directly from the corm, they give the plant a stemless appearance (without an apparent main stem). The texture of the foliage is smooth, shiny, even waxy , highlighting its coloration. The color varies from dark green to a grayish green, often with silvery to white mottling or variegation , which is highly sought after, particularly in horticultural cultivars. The main veins, especially the midrib, are often lighter (creamy-white). Each leaf can measure up to 30 cm in length and 10 to 15 cm in width depending on conditions. The particularity of this foliage is its appearance in autumn (end of September/October), its persistence throughout the winter where it is most decorative, and its disappearance at the end of spring or beginning of summer (May-June). The foliage is therefore present on average 6 to 8 months per year , from autumn to the end of spring.

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Inflorescence and decorative fruiting potential

The flowering of Arum italicum, although less spectacular than that of other Araceae such as Zantedeschia, is of distinct technical and ornamental interest. The inflorescence, characteristic of the family, consists of an erect spadix , creamy white, or yellow according to other descriptions, covered with tiny flowers. This spadix is ​​enclosed by a broad, sheathing spathe , translucent pale green in color, measuring about 30 cm long and 15 cm wide . The spathe is sometimes tinged with purple at its tip. The flowering period takes place in spring, generally from March/April to May , for a duration of about 2 to 3 months. The inflorescence is monoecious , with unisexual flowers located at the lower part of the spadix, often larger and yellow for the males, with numerous sterile flowers. After flowering, the leaves and spathes dry out, giving way to the development of the spadix into a fruiting stem. This then bears rounded berries 1 cm in diameter , orange-red or bright orange, which appear in summer. These berries constitute an additional decorative element which prolongs the visual interest of the plant.

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Dimensions and general architecture of the plant

At maturity, Arum italicum generally reaches an average height of between 40 and 60 cm . In some cases, it can measure from a minimum of 20 cm to a maximum of 80 cm. The plant reaches its adult size after 2 to 4 years of cultivation . Its habit is described as an upright clump with bushy foliage at the base . The tuberous root system gives rise to sagittate leaves. The general habit is vertical and upright, with a flared base and compact foliage forming a well-defined clump. The flower stem itself measures between 15 and 40 cm in height .

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Biological cycle and sustainability of the species

Arum italicum is a perennial plant , meaning it can live for more than two years. Thanks to its tubers, it follows a marked annual growth cycle while persisting from year to year. The foliage appears in autumn, persists into winter (especially in mild climates), and then flowers in spring. After flowering, the aerial parts wither and disappear in summer, giving way to decorative berries. New leaves reappear each year in autumn from the base. The natural longevity of the plant can be described as "relatively short" for a perennial without intervention. However, it is possible to considerably extend its lifespan by dividing the clumps approximately every two years . This regular division maintains the vigor of the plants and promotes perenniality. For professionals, it is important to note that the underground organs are corms/tubers , even if they are sometimes called "bulbs".

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Cold resistance and climatic adaptations

Arum italicum is generally considered hardy and frost-resistant . Its hardiness is reliable down to around 0°C without special protection . However, for safe professional cultivation, especially in French regions with harsher winters, it is crucial to know its limits. Although it can withstand temperatures down to -15°C in the ground in well-drained soil, its viability is not guaranteed during very harsh winters falling below -10°C. For professionals growing in these conditions, a winter mulch of 5 to 8 cm thickness (with bark or dead leaves) is strongly recommended to protect the stump. Planting in a protected location may also be appropriate. For potted crops, wintering under unheated cover is recommended if temperatures drop below -5°C for a long time.

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Professional multiplication techniques

Arum italicum is propagated primarily by dividing the tubers (or bulbils) . This method is by far the most reliable, effective, and widely used in professional production. It involves separating the main tubers and the lateral bulbils that naturally form around the mother plant. These bulbils are then replanted individually. Growth rates are relatively rapid using this method: a well-developed bulbil can reach flowering in 2 to 3 years , sometimes as early as the second year under optimal conditions. A mature tuber can produce an average of 7 to 8 daughter tubers per season , and up to 30 under optimal conditions. Division produces clones that are genetically identical to the mother plant. Sowing (multiplication by seed) is possible but much less common in professional production because it is slow and the germination rate varies. Seeds often need to be sown fresh. Plants from seed generally take 3 to 5 years, or even longer, to flower . Sowing allows for genetic diversity but is not suitable for rapid and uniform yields. Division is therefore the standard method for professional production, ensuring speed and varietal uniformity.

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Varietal diversity and ornamental selections

Several cultivars and selections of Arum italicum are of interest to cultivation and landscaping professionals. The type species, Arum italicum subsp. italicum , has glossy green foliage with marked white veins, reaches 30 to 45 cm in height, and its foliage is semi-evergreen to evergreen depending on the climate. Flowering occurs in April-May, followed by orange to bright red berries. Among the popular cultivars, 'Marmoratum' is widespread, characterized by very pronounced white marbling and veins on a bright green background. Its foliage is very decorative in winter and spring. 'Pictum' offers creamy-white marbling, often wider and contrasting on a dark green background. 'White Winter' is a more recent variety with very light coloring, pure white veins, and even almost silvery foliage. These cultivars are distinguished mainly by the color and pattern of their foliage, their height being similar to the type species (25-45 cm). Variegated yellow or cream forms ('Chameleon', 'Mrs. Hume') or selected for their precocity also exist. For professional production, 'Marmoratum' and 'Pictum' are often preferred for the stability of their variegation and their vigor.

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Toxicity and regulatory phytosanitary status

It is imperative to note that all parts of Arum italicum are toxic , especially the red/orange berries. The toxicity is due to alkaloids and calcium oxalate crystals . Ingestion, even at low doses, can cause oral and throat irritation, digestive disorders (nausea, vomiting, diarrhea). In adults, 1 to 2 berries are enough to cause severe symptoms . Contact with the sap can cause skin reactions. Ingestion by livestock also causes digestive disorders. For a professional sales site, mentioning this toxicity is recommended to inform your customers and their teams. In France, Arum italicum is not a protected species and is not subject to any known national protection or restriction measures. However, its invasive potential is recognized in other regions of the world (United States, Australia, New Zealand) where it can compete with native flora. It spreads by vegetative division and by seeds spread by birds. Although the invasive risk is low in most French agricultural contexts, appropriate management is recommended, particularly near sensitive natural environments.

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Assessment of cut flower potential

Arum italicum is not the first species that comes to mind for cut flowers, unlike Zantedeschia aethiopica. Its advantages lie in its decorative foliage (20-30 cm long) and its bright red fruits in autumn. The spring flowering (April-May) is also of interest. The foliage can persist for a long time, offering interest for cutting until summer. However, its technical limitations are notable for this use: the flower stems (30-45 cm) are shorter and less rigid than those of Zantedeschia (50-100 cm). The vase life is also more limited , generally 3 to 7 days compared to 10 to 14 days for "classic" Arums. The flower has little or no fragrance. Arum italicum is therefore more of a plant for niche use in floral art , enhancing its graphic foliage and fruits for "wild" or naturalistic bouquets, rather than a direct alternative to standard Arums in professional floristry.

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Landscape integration and naturalization capacity

For landscaping professionals, Arum italicum is a versatile and valuable plant. Reaching 40 to 60 cm in height , it is particularly suited to shaded to semi-shaded areas , thriving under trees or along north-facing walls. Its ability to green dimly lit areas is an asset. In beds and undergrowth, its dense foliage (bushy at the base) creates elegant ground cover. It also fits well with the edges of ponds and wetlands, appreciating cool to moist soils. Arum italicum has a strong capacity for naturalization , and can become invasive in certain regions. Its natural propagation by division of tubers and spontaneous sowing contributes to this expansion. For an effective planting density, count 6 to 9 bulbs/m² for a massive effect. It contributes to biodiversity by being a food source for pollinators, particularly bees and bumblebees.

Applications for communities and large spaces

Arum italicum is an excellent choice for community development projects and large public spaces in France. Its hardiness (down to -10°C reliably, or even -15°C with protection) and its low water requirements once established make it very economical to maintain. It tolerates summer drought well. Its adaptation to various exposures (partial shade to shade, tolerating sun if the soil is moist) and to normal, humus-rich, well-drained garden soils, makes it versatile for the urban environment. It offers prolonged aesthetic interest : spring flowering, decorative foliage in winter, red fruits in autumn. Its integration into an ecological approach is relevant, particularly for rainwater management and the contribution to the reduction of urban heat islands. The ease of natural propagation allows for denser plantings without additional cost. The use of size 6/+ bulbs is recommended for good professional recovery.

Expected performance in professional culture

In professional cultivation, Arum italicum is valued for its foliage, flowers and fruits. A mature tuber generally produces 1 to 3 flower spathes per season , accompanied by a tuft of 5 to 10 leaves. The plant reaches its maximum production in 2 to 3 years after planting . With a density of 10 to 15 bulbs per square meter, one can expect approximately 10 to 45 flower stems per m² per year on a mature plantation. The yield of decorative berries is also a criterion of interest. The ability of the plant to reseed itself spontaneously facilitates the expansion of the plant cover.

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Optimal soil and climate requirements

Arum italicum prefers soils rich in organic matter and humus . The ideal texture is a loose, medium-textured soil, allowing a good balance between water retention and aeration. Good drainage is essential to avoid bulb rot, the soil should remain constantly moist but never soggy. The species is remarkably adaptable regarding pH, tolerating acidic, neutral and alkaline soils. Its adaptation is excellent to calcareous soils .

Light exposure management

Regarding light exposure, Arum italicum shows a marked preference for partial shade to light shade , i.e. 2 to 6 hours of direct sunlight per day. Deep shade is tolerated but can reduce the vigor and quality of the foliage. Full sun is only optimal if the soil remains very moist and can cause leaf burn. Ideally, favor partial shade (25 to 50% open shade) or morning sun.

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Crop calendar and planting techniques

The ideal time to plant Arum italicum bulbs is in the fall, before the first frosts , to allow good rooting before winter. An alternative is possible in the spring for certain varieties. To optimize rooting, planting during the waning moon is recommended. The recommended planting depth is 8 to 10 cm , which corresponds to two to three times the height of the bulb. The recommended spacing between each bulb is 20 to 30 cm for optimal development, or approximately 4 bulbs per square foot or 11 bulbs per square meter. For container crops, use pots at least 20 to 25 cm deep, space the tubers 10 to 15 cm apart, and ensure good drainage.

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Reasonable water and nutritional management

Arum italicum appreciates a fresh, well-drained soil . When planting, abundant watering is necessary. During active growth (autumn to spring), keep the soil fresh and moderately moist, but not excessively so as to avoid rotting. Provide 10 to 15 mm of water per week in the absence of rain. In summer, during dormancy, the plant tolerates drought well and watering can be stopped. Fertilization needs are modest. Incorporating 2 to 3 kg/m² of mature compost or organic amendment at planting enriches the soil. An annual application of balanced fertilizer (NPK 8-12-18 or 4-6-10) of 50 to 60 g/m² in early spring is recommended. A supplement of 30 to 40 g/m² can be considered in early summer if necessary.

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Maintenance techniques and crop protection

Mulching is not always mandatory everywhere in France, as the plant is hardy. However, it is strongly recommended for young plants and in regions where temperatures drop below -10°C or during prolonged frosts. An organic mulch (bark, dead leaves) 5 to 8 cm thick protects the stump. Avoid wet mulches which can promote rot. For potted crops in very cold areas, wintering under cover is preferable.

Routine maintenance and optimization of practices

Arum italicum requires little routine maintenance. Regular weeding (every 3 to 5 weeks during the growing season) is essential, especially in the first few years, to avoid competition from weeds. Removing faded flowers is not required for health, but can redirect energy to the bulb and limit spontaneous seedlings; a monthly pass during and after flowering is sufficient. Lifting and dividing the stocks is not annual but recommended every 4 to 5 years to maintain vigor and optimize density. This operation is done in late summer/early autumn. Watering should be adapted according to the climate, aiming for moderate humidity without excess. A fertilizer application (30 to 50 g/m² of fertilizer for flowering plants) at the recovery is beneficial.

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Health prophylaxis and management of bioaggressors

Although robust, Arum italicum can be subject to certain pests and diseases, especially in intensive cultivation. The main pests are slugs and snails that attack young shoots, and plant-parasitic nematodes (Meloidogyne, Ditylenchus) that can affect the bulbs, potentially causing losses if infestation thresholds exceed 1000 nematodes per 100g of soil. The most common diseases are bulb rots (Pythium, Fusarium, Rhizoctonia) , favored by excess moisture. Prevention is key: crop rotation (minimum 4-5 years) with non-susceptible species, good soil drainage, use of healthy equipment, and disinfection of tools and bulbs. Regular monitoring (every 7 to 10 days during active growth) allows problems to be detected early. For slugs, intervention is recommended when 10% of plants are affected . In the event of a confirmed infestation, targeted treatments (authorized fungicides or nematicides) can be applied. The integration of biological control is a preferred approach.

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Techniques for harvesting and preserving propagation organs

The tubers are ideally harvested in late summer or early autumn (mid-August to late September) , when the foliage has dried out. Carefully dig at least 15 cm around the plant and lift the whole thing, shaking off excess soil. Healthy tubers are firm and free of blemishes. The seeds are harvested in autumn (September-October) when the red-orange berries are ripe. The seeds are extracted, cleaned of the pulp and dried for 24-48 hours.

Professional storage conditions

To store the tubers, let them dry for 2-3 days, clean off any remaining soil and discard any damaged plants. Store them at 10-15°C and 60-70% humidity , in boxes with slightly damp material (vermiculite, peat), for a maximum of 3-4 months before replanting in the fall . The seeds require cold stratification to break dormancy. Place them in a moist mix (peat/vermiculite) at 3-5°C in the refrigerator for at least 3 months , ideally 6. The expected germination rate is low (30-40%) .

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Crop rotation strategies and soil remediation

To avoid the accumulation of soil-borne diseases and nematodes, crop rotation is crucial . Avoid growing species susceptible to the same pathogens before or after Arum italicum. This includes other Araceae (Colocasia, Zantedeschia) and other bulbous/tuberculous plants likely to accumulate rot (Fusarium, Pythium). Favor cereal crops, legumes, or non-bulbous vegetable crops (lettuce, carrot), as well as green manures, which purify the soil. The recommended rotation duration is at least 4 to 5 years before replanting Arum italicum on the same plot.

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Adaptations to extreme climatic conditions

Faced with prolonged drought , although established Arum italicum resists well, young plants or intensive crops require attention. Provide supplemental watering (15-20 mm/week) if the water deficit is significant, and use organic mulch (4-5 cm) to limit evaporation. For very harsh winters (below -10°C) , abundant mulching (10-15 cm) from autumn is recommended. Potted crops should be overwintered under unheated cover. Limit watering during winter dormancy to avoid rot.

Absence of specific vernalization

It is important to note that Arum italicum does not require specific vernalization (exposure to a controlled period of cold) to induce flowering. Its spring flowering depends on the tuber reaching a minimum biomass (4 to 7 years for full maturity) and respecting its natural seasonal cycle in a temperate climate. Typical winters in temperate zones are sufficient, and exposure to cold is not a strict trigger for flowering as it is for other bulbs.

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Growing under protection and in containers

Arum italicum is very suitable for growing in pots or under cover. Use pots at least 20 to 25 cm deep with a humus-rich, well-drained substrate (mixture of horticultural soil + compost). The optimal pH is slightly acidic to neutral (6.0-7.0) . Watering should be regular during growth, but moderate, and very limited in summer. Under cover, ventilate to limit humidity and adjust watering. A planting depth of 10 to 15 cm is recommended in pots. An annual application of organic fertilizer (40-60 g/pot) is beneficial.

Visual health assessment indicators

A healthy plant has shiny, firm foliage, without yellowing or browning , and firm tubers without rot. Deficiencies are manifested by specific yellowing of the leaves (iron, magnesium, nitrogen) or deformations (calcium). Water stress results in wilting (lack of water) or rotting of the tubers (excess water). Excessive exposure to sunlight can cause leaf burn. Rich, humus-rich, well-drained soil and partial shade exposure are essential to maintain plant health.

Division frequency and influence of caliber

Division of clumps is essential to maintain vigor and flowering. It is recommended every 3 to 4 years in late summer/early autumn . Bulb size directly influences vigor and flowering capacity. Larger bulbs (> 2-3 cm) have more reserves and produce robust flower stems in the first year. Small bulbils require 1 to 2 seasons to reach floral maturity. A mature tuber can bear up to five inflorescences per year .

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To summarize: Our Arum Italicum Bulbs

Arum italicum is an exceptional plant for landscape and floriculture professionals. Its ability to enhance shaded areas, its winter persistence and its graphic characteristics (variegated sagittate foliage, red berries) make it a reference. As a wholesale supplier specializing in flower bulbs , Floriverse offers bulbs suitable for autumn planting for flowering from March to May. Each tuber can produce 1 to 3 flower spathes and up to 10 leaves, depending on growing conditions and the size chosen.

Whether for growing in the ground or in containers, purchasing Arum Italicum bulbs from our team guarantees reliable technical performance and sought-after plant aesthetics. Our bulbs are available in various categories—conventional, organic, or untreated—to meet the needs of short supply chains, institutional producers, or specialty markets. Thanks to our logistical expertise and network of producers, we offer a responsive and competitive service.

For any plant design or niche cultivation project, buying Arum Italicum bulbs from Floriverse is the assurance of quality support, from ordering to harvesting. Trust a specialist wholesale supplier of flower bulbs to maximize your production potential and respond to new trends in the floral market. At Floriverse, we combine horticultural tradition and varietal innovation to serve professional excellence.