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FernsHerbaceous Perennial

Blechnum fluviatile

ray water fern

A compact, evergreen fern with central upright fertile fronds surrounded by recumbent sterile fronds. The leaflets are small and ovate and the stems are covered in dark brown bristles

Other common names
kiwakiwa
Synonyms
Blechnum fluviatile 'Kiwakiwa'
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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Loam
Clay
Moisture
Moist but well–drained
pH
Neutral, Acid
Colour & scent
StemFlowerFoliageFruit
Spring Brown Green
Summer Brown Green
Autumn Brown Green
Winter Brown Green
Position
  • Partial shade
Aspect

West–facing or East–facing or North–facing

Exposure
Sheltered
Hardiness
H4
Botanical details
Family
Blechnaceae
Native to the UK
No
Foliage
Evergreen
Habit
Clump forming
Genus

Blechnum are mostly evergreen ferns with erect or creeping rhizomes and simply pinnate, leathery fronds, the fertile ones usually erect, the sterile often spreading

Name status

Correct

Plant range
Malesia to New Zealand

How to grow

Cultivation

Grow in moist but free draining soil in partial shade. For more information see how to grow ferns for further advice

Propagation

Propagate by division or spores

Suggested planting locations and garden types
  • Cottage and informal garden
  • Low Maintenance
  • Underplanting of roses and shrubs
  • Flower borders and beds
Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free

Get involved

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