Adiantum aleuticum 'Imbricatum'

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Aleutian maidenhair 'Imbricatum'

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Aleutian maidenhair 'Imbricatum' RHS / Joanna Kossak
Aleutian maidenhair 'Imbricatum' RHS

Synonyms

Adiantum pedatum 'Imbricatum'

Ferns
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A dwarf fern, to 20cm tall, with black stems and fan-shaped, pale bluish-green fronds composed of leaf segments close together on the midrib. New fronds may be tinged pink when young

Position

Full shade, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full shade Partial shade
Aspect
North–facing or West–facing or East–facing
Exposure
Sheltered
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)
H5

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Pteridaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming
Genus
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
Name Status
Accepted

How to Grow

Cultivation

Grows best in dappled shade in moist but well-drained soil, rich in organic matter with good drainage and shelter from cold winds

Propagation

Propagate by spores as soon as ripe at minimum 15°C; propagate by division of rhizomes in early spring

Suggested planting locations and garden types

  • Cottage and informal garden
  • Patio and container plants
  • Underplanting of roses and shrubs
  • Flower borders and beds

Pruning

No pruning required

Pests

Generally pest-free though scale insects may be a problem under glass

Diseases

Generally disease-free