Zantedeschia aethiopica 'White Sail'

RHS Plant Profile

arum lily 'White Sail'

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 10cm long, composed of open, white 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