• 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

Asplenium trichomanes

maidenhair spleenwort

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
maidenhair spleenwort

© RHS

  • Other common names maidenhair spleenwort
    common spleenwort

    English maidenhair
    green spleenwort
    waterwort

    see more
  • Synonyms Asplenium trichomanoides

  • Family Aspleniaceae

  • Genus Asplenium are evergreen ferns with short, usually erect rhizomes bearing a rosette of slightly leathery fronds which may be simple, pinnate to 3-pinnate

  • Details A. trichomanes is a compact evergreen fern forming a rosette of blackish-stemmed, pinnate fronds with small, rounded or oblong segments; well-suited to planting in a dry wall

  • Plant range N temp; trop. mts.

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)

    H6

Colour

Sunlight

  • Full Shade

  • Partial Shade

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

  • Exposure Exposed or Sheltered

Soil

  • Sand

    Sand

  • Chalk

    Chalk

  • Loam

    Loam

  • Clay

    Clay

  • MoistureMoist but well-drained

  • SoilSand, Chalk, Loam, Clay

  • pHAlkaline, Neutral

Size

  • Ultimate height 0.1-0.5 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 5-10 years

How to grow

Cultivation Under glass grow in a mix of equal parts loam, coarse leaf mould, sharp sand and charcoal. Water moderately when in growth, water sparingly over winter. When in growth apply a half-strength balanced liquid fertiliser monthly. Grow outdoors in humus-rich, moist but well-drained soil. Prefers alkaline conditions. Bright midday sun can cause damage

Propagation Propagate by sowing spores in mid to late summer or by division in spring

Suggested planting locations and garden types Flower borders and beds Low Maintenance Underplanting of Roses and Shrubs Architectural City & Courtyard Gardens Coastal Cottage & Informal Garden Patio & Container Plants

How to care

Pruning Dead or damaged fronds may be removed as necessary

Pests Generally pest free outdoors

Diseases Generally disease free

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