• AGM plants

    AGM plants have been through a rigourous 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

Platycerium bifurcatum

Common staghorn fern

AGM plants

AGM plants have been through a rigourous 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
Common staghorn fern

© � RHS 2002

  • Other common names Common staghorn fern
    Common stag's horn fern

    Australian elk's horn fern
    Elkhorn fern
    Antelope ears

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  • Synonyms Platycerium alcicorne misapplied

  • Genus Platycerium are evergreen, epiphytic ferns with short rhizomes, and a tuft of rounded or heart-shaped sterile fronds, sometimes lobed on the upper margin, and erect or pendent, grey-green fertile fronds which are usually repeatedly forked

  • Family Polypodiaceae / Polypodiaceae

  • Species P. bifurcatum is an evergreen, epiphytic fern with heart-shaped sterile fronds and grey-green, arching, fertile fronds to 90cm in length, forked into strap-shaped segments, bearing brown spore patches beneath the tips

  • Plant range Asia Polynesia Austr.

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)
    Old hardiness ratings

    While we update our systems with the new hardiness ratings you may still see old hardiness ratings in your search results. These are denoted as 'Old'.

    • H1 - Requires heated glass
    • H2 - Requires unheated glass
    • H3 - Hardy outside in some regions of the UK
    • H4 - Hardy throughout the UK
    • H1 + H3 - Requires heated glass but may be grown outside in summer

    For full details of the hardiness ratings see

    see more

    H1b

Colour

Sunlight

  • Partial Shade

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

  • Exposure Sheltered

Soil

  • Chalk

    Loam

  • MoistureMoist but well-drained

  • SoilLoam

  • pHNeutral

Size

  • Ultimate height

    0.5-1 metres

  • Ultimate spread

    0.5-1 metres

  • Time to ultimate height

    10-20 years

How to grow

Cultivation Under glass grow epiphytically in equal parts leaf mould, coarse peat, sphagnum moss, loam and charcoal in bright filtered light. When in growth water freely in high humidity and apply a balanced liquid fertiliser monthly. Water sparingly in winter. Can be grown outdoors epiphytically

Propagation Sow spores when ripe or detach plantlets

Suggested planting locations and garden types Drought Resistant Hedging & Screens Low Maintenance Mediterranean Climate Plants

How to care

Pruning No pruning required

Pests Susceptible to scale insects

Diseases Generally disease free

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