• 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

Pteris cretica

Cretan brake

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
Cretan brake

© RHS 2002

  • Other common names Cretan brake

  • Family Pteridaceae

  • Genus Pteris can be evergreen, semi-evergreen or deciduous ferns, with short or long rhizomes and fronds that may be pinnate to 4-pinnate

  • Details P. cretica is a tufted evergreen fern to 60cm in height, with long-stalked erect fronds pinnately divided into 3-5 pairs of linear, dark green leaflets which are narrower on the fertile fronds

  • Plant range Old World Trop. & Sub-Trop.

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)

    H1C

Colour

Sunlight

  • Partial Shade

  • Full Shade

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

  • Exposure Sheltered

Soil

  • Chalk

    Loam

  • Chalk

    Chalk

  • Chalk

    Sand

  • MoistureMoist but well-drained

  • SoilLoam, Chalk, Sand

  • pHAlkaline, Neutral

Size

  • Ultimate height 0.5-1 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 5-10 years

How to grow

Cultivation Grow outdoors in moist but well-drained soil with plenty of added leaf-mould or in a container under glass with added limestone chips in high humidity

Propagation Propagate by sowing spores as soon as ripe or division of rhizomes in spring

Suggested planting locations and garden types Flower borders and beds Low Maintenance Underplanting of Roses and Shrubs Cottage & Informal Garden Rock Garden Patio & Container Plants

How to care

Pruning Dead or damaged fronds may be removed as necessary

Pests Generally pest free outdoors but under glass may be susceptible to scale insects and eelworms

Diseases Sooty mould may be a problem

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