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Adiantum pedatum L.

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© RHS

Characteristics

Plant type

Fern

Habit

Bushy

Resilience

Hardiness

old H4 (hardy)

Colour

Foliage

Green in Autumn and Summer
Green and Dark Pink in Spring

Stem

Black in

Size

Ultimate height

0.1-0.5 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

5-10 years


Preferred common name

five-fingered maidenhair fern

Family

Pteridaceae


Adiantum can be deciduous or evergreen ferns with shiny black stalks bearing simple or more usually pinnately divided fronds, the segments fan-shaped, oblong or rounded, carrying spores under reflexed marginal flaps

A. pedatum is a deciduous fern with a shortly creeping rhizome, forming a clump to 45cm tall. Wiry black stems bear branched, spreading fronds, sometimes deep pink when young

Other common names

  • American maidenhair fern
  • northern maidenhair fern

How to grow

Sunlight

  • Part shade
  • Full shade

Aspect

  • South-facing, West-facing or East-facing
  • Exposed or Sheltered

Cultivation

Outdoors grow in moderately fertile soil. Under glass grow in a mix of 1 part each of loam, medium grade bark, charcoal and lime chippings; 2 parts sharp sand; 3 parts leaf mould. Provide bright filtered light in medium to high humidity with good ventilation. When in growth apply a half strength balanced liquid fertiliser monthly. Remove damaged fronds in spring

Soil

  • Moist but well-drained
  • Acid, Alkaline or Neutral
  • Sand, Clay, Chalk or Loam

Propagation

Propagate by spores

Suggested planting locations and garden types

Cottage/Informal Garden, Low Maintenance or Flower borders and beds


How to care

Pruning

No pruning required

Pests

scale insects may be a problem under glass

Diseases

Generally disease free