• 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

Dicksonia antarctica

soft tree fern

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
© Niki Simpson 2000
  • Other common names soft tree fern
    Australian tree fern

    Tasmanian tree fern
    woolly tree fern

    see more
  • Family Dicksoniaceae

  • Genus Dicksonia are evergreen tree ferns, but may be deciduous in cold areas, with a stout erect, trunk-like rhizome clothed in fibrous roots, and bearing a rosette of large, pinnately divided fronds at the apex

  • Details D. antarctica is an evergreen tree fern, but deciduous in colder areas, growing slowly to 4m in height, with a stout reddish-brown stem and a terminal rosette of arching, deeply divided, glossy dark green fronds to 3m in length

  • Plant range Australia (Tasmania)

Characteristics

  • Foliage Evergreen

  • Habit Tufted

  • 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)

    H3

Colour

Sunlight

  • Partial Shade

  • Full Shade

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

  • Exposure Sheltered

Soil

  • Loam

    Loam

  • Sand

    Sand

  • MoistureMoist but well-drained

  • SoilLoam, Sand

  • pHAcid, Neutral

Size

  • Ultimate height 2.5-4 metres

  • Ultimate spread 2.5-4 metres

  • Time to ultimate height 20-50 years

How to grow

Cultivation Grow outdoors in a moist but well-drained humus-rich soil. In hot, dry summers water the stem but avoid watering the crown in winter. Will grow without winter protection only in milder areas

Propagation Propagate by sowing spores as soon as ripe

Suggested planting locations and garden types Flower borders and beds Patio & Container Plants Architectural

How to care

Pruning Dead or damaged fronds may be removed as necessary

Pests Generally pest free outdoors

Diseases Generally disease free outdoors

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