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Alocasia × amazonica AGM

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© RHS 1999

Characteristics

Plant type

Conservatory/Greenhouse or Houseplant

Habit

Bushy

Toxicity

Ingestion may cause severe discomfort; skin and eye irritant

Resilience

Hardiness

H1a (heated greenhouse - tropical)

Colour

Foliage

Green, Grey/Silver and Purple in Autumn, Spring, Summer and Winter

Size

Ultimate height

1-1.5 metres

Ultimate spread

1-1.5 metres

Time to ultimate height

5-10 years


Preferred common name

African mask

Family

Araceae


Alocasia are robust evergreen rhizomatous or tuberous perennials with large, usually peltate, leaves with conspicuous veins; insignificant flowering spathes may be followed by orange-red fruits

A. x amazonica is a robust evergreen rhizomatous perennial to 1.5m tall, with narrowly arrow-shaped, wavy-edged leaves to 60cm long, dark green with silver veins above, purple beneath

Other common names

  • Amazonian elephant's ear

How to grow

Sunlight

  • Part shade

Aspect

  • West-facing or East-facing
  • Sheltered

Cultivation

Grow indoors in a potting mixture of equal parts of composted bark, loam and sand, in filtered light. Water freely in the growing season and provide high humidity by placing the container on a tray or moist gravel or pebbles. Apply a balanced liquid fertiliser every 2-3 weeks. Water moderately in winter. Requires a minimum temperature of 15-18°C (59-64°F)

Soil

  • Moist but well-drained
  • Acid or Neutral
  • Loam

Propagation

Propagate by seed at 23°C (73°F) as soon as ripe. Propagate by Division in spring or summer. Propagate by stem cuttings in spring

Suggested planting locations and garden types

Patio/Container Plants


How to care

Pruning

No pruning necessary

Diseases

Generally trouble free