Arum italicum subsp. italicum 'Marmoratum'

RHS Plant Profile

Italian arum 'Marmoratum'

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Synonyms

Arum italicum 'Pictum'
Arum italicum marmoratum
Arum italicum var. pictum

Bulbs

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A tuberous perennial to 35cm, with large, arrow-shaped dark, glossy green leaves veined creamy-white and appearing in autumn. Large greenish-yellow spathes with a yellow spadix are followed by showy spikes of orange-red berries

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.1-0.5 metres
Max Height: 0.1-0.5 metres

Growing Conditions

Chalk Loam Sand

Moisture: Well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun Partial shade

Aspect: East–facing or South–facing or North–facing or West–facing
Exposure: Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

H1A: under glass all year (>15C)
H1B: can be grown outside in the summer (10 - 15)
H1C: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20): H6

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Araceae
Native to GB/Ireland: No
Foliage: Semi evergreen
Habit: Columnar upright
Potentially harmful: TOXIC if eatenskin/eye irritant. Wear gloves and other protective equipment when handling TOXIC to pets - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Genus: Arum are tuberous perennials with simple, arrow-head shaped leaves and tiny flowers hidden, at the base of a yellow or purple, club-shaped spadix, within a showy, hood-like spathe, and followed by red berries
Name Status: Accepted

How to Grow

Cultivation

Grow in moist but well-drained humus-rich soil and plant 10 to 15cm deep. Has the potential to become a nuisance if not managed well

Propagation

Division of clumps of tubers should take place after flowering. Alternatively, propagate by seed sown in autumn having removed the fleshy pulp

Suggested planting locations and garden types

Cottage and informal garden
Underplanting of roses and shrubs
Flower borders and beds

Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free