Arum

Italian Arum

Regno	Plantae
Sottoregno	Tracheobionta
Superdivisione	Spermatophyta
Divisione	Magnoliophyta
Classe	Liliopsida
Ordine	Alismatales
Famiglia	Araceae
Sottofamiglia	Aroideae
Genere	Arum

Luce

Low

Acqua

Medium high

Specie

Arum italicum, commonly known as Italian Arum or Lords-and-Ladies, is a striking tuberous perennial renowned for its dramatic arrow-shaped leaves with creamy-white veining. This woodland plant produces elegant cream spathes in spring followed by bright orange-red berries in summer. Arum italicum is prized for its winter interest and shade tolerance.

Habitat naturale

Arum italicum originates from the Mediterranean region and Western Europe, thriving in deciduous woodlands, rocky slopes, and stream banks. It prefers cool, moist shade with humus-rich soil and summer dormancy.

Storia e cultura

Long cultivated in European gardens for its elegant foliage. All parts are poisonous, containing calcium oxalate crystals, which gave rise to its folk names referencing genitalia. Used medicinally in small doses historically.

Utilizzi

Grown as a shade-loving foliage plant for winter gardens, containers, and woodland borders. The variegated leaves provide bright contrast in dark areas from autumn through spring.

Conservazione

Common in cultivation and stable wild populations. Can become invasive in some areas due to tuberous spread and self-seeding.

Specie e varietà (2)

Arum italicum

2 cultivar

Arum maculatum

Guida alla cura

Luce

Arum prefers bright, indirect light to partial shade. The classic Arum italicum tolerates quite deep shade — making it useful for difficult low-light positions. Avoid direct harsh sun. Many Arum species are adapted to woodland conditions with dappled light.

Acqua

During active growth, keep the soil moderately moist. Allow the top 2–3 cm to dry between waterings. Arum is tuberous and undergoes a summer dormancy period (leaves yellow and die back naturally in early summer) — drastically reduce watering at this point. Resume normal watering in autumn when new growth emerges.

Substrato

Rich, moisture-retentive but well-draining mix: 60% potting compost, 20% coco coir, 20% perlite. Arum grows naturally in woodland soils rich in leaf mould.

Temperatura e umidità

Arum italicum is cold-hardy to -10 °C and is primarily an outdoor plant. As a houseplant, cool to moderate temperatures (10–20 °C) are preferred. Standard indoor humidity is adequate.

Concimazione

Feed monthly during spring with a balanced liquid fertilizer. Reduce in summer as the plant enters dormancy.

Potatura

⚠️ ALL PARTS OF ARUM ARE HIGHLY TOXIC — the berries in particular contain high concentrations of calcium oxalate and arum toxins. Keep strictly away from children and all pets. Wear gloves when handling. Remove the flowering spadix if berries are a concern.

Propagazione

Divisione

Primary method during summer dormancy when plant dies back completely.

Dig up dormant tubers in midsummer after leaves wither.

Gently separate clusters, keeping small tubers with roots.

Replant immediately 2-3 inches deep in moist soil.

Water well; expect autumn regrowth.

Semina

Fresh seed sown immediately after berry ripening; slow but produces strong plants.

Collect ripe orange berries in summer, remove pulp from seeds.

Sow fresh seeds in pots with seed compost.

Keep moist at 60°F; germinates next spring.

Transplant second year.

Domande frequenti

My Arum leaves are all dying in summer — is it diseased?

No — summer dormancy is normal for most Arum species. The foliage naturally dies back after flowering. Reduce watering and let the leaves yellow and die back fully. New growth will reappear in autumn.

Are Arum berries dangerous?

Extremely — the bright red-orange berries are very toxic, particularly to children and pets, containing calcium oxalate crystals and arum alkaloids. Ingestion causes severe burning, swelling, vomiting and can be life-threatening. Remove flower spikes before berries develop if children or pets are present.

Can Arum grow indoors?

Arum italicum is primarily an outdoor woodland plant but can be grown indoors in a cool, bright position. It is better suited to covered outdoor spaces (porches, conservatories) than heated homes. More tropical aroids (Zantedeschia, Spathiphyllum) are better suited to indoor environments.

Proponi una modifica