Zantedeschia aethiopica 'Marshmallow'

RHS Plant Profile
arum lily 'Marshmallow'

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Synonyms

Zantedeschia aethiopica 'Marshmallow Pink'

Herbaceous Perennial Bogs
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A rhizomatous perennial, evergreen in mild areas, forming a clump of glossy, arrow-shaped leaves to 45cm long. From late spring to midsummer it bears a succession of exotic-looking flowers to 15cm long, composed of pale pink spathes around a yellow spadix. Suitable for constantly moist soil, a bog garden, or pond margin

Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
2–5 years
Max Spread
0.5-1 metres
Max Height
0.5-1 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Poorly–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
South–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)
H4

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Araceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming
Potentially harmful
Harmful if eatenskin/eye irritant. Wear gloves and other protective equipment when handling. Pets: Harmful if eatenskin/eye irritant - for further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus
Zantedeschia can be deciduous or semi-evergreen, tuberous perennials with lance-shaped or arrow-shaped leaves and tiny yellow flowers forming a dense spike-like spadix, with a showy, hood-like spathe, sometimes followed by orange berry-like fruits
Name Status
Accepted

How to Grow

Cultivation

Grow in humus-rich, moist to poorly drained soil in full sun. In very cold areas protect the crown with a deep winter mulch. See zantedeschia cultivation

Propagation

Propagate by seed or division

Suggested planting locations and garden types

  • Patio and container plants
  • Sub-tropical
  • Low Maintenance

Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free