• 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

Dieffenbachia 'Tropic Snow' (v)

dumb cane 'Tropic Snow'

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
dumb cane 'Tropic Snow'

© RHS

  • Other common names dumb cane 'Tropic Snow'

  • Synonyms Dieffenbachia seguine 'Tropic Snow'

  • Family Araceae

  • Genus Dieffenbachia are evergreen perennials with large, ovate leaves which are usually attractively mottled with white or yellow; flowering spathes are seldom produced in cultivation

  • Details 'Tropic Snow' is a compact, almost stemless plant with ovate creamy-green leaves with darker green margins and midrib

Characteristics

  • Foliage Evergreen

  • Habit Bushy

  • Toxicity All parts are toxic by ingestion and sap may irritate the skin

  • 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 South-facing or West-facing or East-facing

  • Exposure Sheltered

Soil

  • Chalk

    Sand

  • Chalk

    Clay

  • Chalk

    Chalk

  • Chalk

    Loam

  • MoistureMoist but well-drained

  • SoilSand, Clay, Chalk, Loam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 1-1.5 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 5-10 years

How to grow

Cultivation Under glass grow in loam-based potting compost in bright filtered light with high humidity. Water moderately and apply a balanced liquid fertiliser monthly when in growth and keep just moist in winter

Propagation Propagate by root tip cuttings in spring or summer or by air layering

Suggested planting locations and garden types Low Maintenance Patio & Container Plants

How to care

Pruning No pruning required

Pests New growth is susceptible to damage by aphids

Diseases Generally disease free

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