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Dryopteris crassirhizoma

thick-stemmed wood fern

A semi-evergreen fern to 1m tall and wide with a thick, brown crown from which upright to slightly arching fronds arise to form a vase-shaped clump; each frond is divided into narrowly lance-shaped and lobed pinnae

Other common names
crown wood fern
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Size
Ultimate height
0.5–1 metres
Time to ultimate height
5–10 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained, Poorly–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Brown Green
Summer Green
Autumn Green
Winter Green
Position
  • Full shade
  • Partial shade
Aspect

North–facing or West–facing or East–facing or South–facing

Exposure
Exposed or Sheltered
Hardiness
H6
Botanical details
Family
Dryopteridaceae
Native to the UK
No
Foliage
Semi evergreen
Habit
Bushy
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

Plant range
Japan Korea

How to grow

Cultivation

Easy to grow in most cool, moist, lightly-shaded sites but will grow in full sun if given plenty of moisture. Tolerant of dry shade but water regularly in their first season and mulch well. See how to grow ferns for further advice

Propagation

Propagate by division in spring

Suggested planting locations and garden types
  • City and courtyard gardens
  • Architectural
  • Cottage and informal garden
  • Underplanting of roses and shrubs
  • Flower borders and beds
Pruning

Dead or damaged fronds may be removed as necessary

Pests

Generally pest-free

Diseases

Generally disease-free

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