• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Phalaenopsis amabilis

East Indian butterfly plant

AGM plants

AGM plants have been through a rigorous trial and assessment programme. They are:

  • Excellent for ordinary use in appropriate conditions
  • Available to buy
  • Of good constitution
  • Essentially stable in form & colour
  • Reasonably resistant to pests & diseases
East Indian butterfly plant

© RHS

  • Other common names East Indian butterfly plant

  • Synonyms Phalaenopsis aphrodite

  • Family Orchidaceae

  • Genus Phalaenopsis are a large genus of species and hybrid mainly epiphytic orchids. Short, upward growing, stem-like rhizomes with no pseudobulbs produce oval, fleshy mid to dark green leaves and flowers in branched racemes from the base of the leaves

  • Details P. amabilis has between 3 and 5 broadly oval, fleshy leaves which grow to 50cm long. Numerous, scented, long-lasting white flowers, up to 10cm across, with a white and yellow lip and red throat are borne from autumn to early spring on branched racemes up to 1m tall

  • Plant range E Indies, Australia

Characteristics

  • Foliage Evergreen

  • Fragrance Flower

  • 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)

    H1A

Colour

Sunlight

  • Partial Shade

  • Aspect North-facing or West-facing or East-facing

  • Exposure

Soil

  • MoistureWell-drained

  • Soil

  • pHNeutral

Size

  • Ultimate height 0.5-1 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 1-2 years

How to grow

Cultivation Grow in an open bark-based compost and position with good indirect light and warm even temperatures. Water thoroughly when compost has almost dried out and feed regularly. Do not leave standing in water. See Phalaenopsis cultivation

Propagation Cuttings or offshoots (keikis) may root successfully when roots are 2cm long

Suggested planting locations and garden types

How to care

Pruning Cut back flowered stems to a lower node to encourage the production of further flowers

Pests Susceptible to aphids, glasshouse red spider mite, and mealybugs

Diseases Generally disease free

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