Dryopteris oreades

RHS Plant Profile
mountain male fern

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Synonyms

Dryopteris abbreviata

Ferns Herbaceous Perennial

A semi-evergreen, clump-forming fern with an upright to arching habit to 40 to 80cm in height and spread. The mid-green, grey-green leaves are divided into many smaller leaflets, giving a feathery appearance

Position

Full shade, Partial shade

Soil Types

Clay, Loam

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
2–5 years
Max Spread
0.5-1 metres
Max Height
0.5-1 metres

Growing Conditions

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

Position

Full shade Partial shade
Aspect
East–facing or North–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
Dryopteridaceae
Native to GB/Ireland
Yes
Foliage
Semi evergreen
Habit
Clump forming
Genus
Dryopteris can be deciduous, semi-evergreen or evergreen ferns, with stout, erect or decumbent rhizomes and shuttlecock-like rosettes of lance-shaped to ovate, pinnately divided fronds
Name Status
Correct

How to Grow

Cultivation

Grows well in most moist but free draining soil in shade or partial shade. See how to grow ferns for further advice

Propagation

Propagate by sowing spores as soon as ripe, or by division in spring

Suggested planting locations and garden types

  • Wildlife gardens

Pruning

No pruning required, but can remove and dead or damaged fronds as required

Pests

Generally pest-free

Diseases

Generally disease-free