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BogsHerbaceous Perennial

Astilbe glaberrima var. saxatilis
  • RHS AGM

smooth rock astilbe

Dwarf clump-forming perennial about 8cm tall and 15cm wide, with glossy bronze-green, deeply divided leaves, red-tinted beneath, and short sprays of pinkish-mauve tinged white flowers to 10cm long appear above the foliage in summer

Synonyms
Astilbe japonica 'Saxosa'
Astilbe 'Saxosa'
see moreAstilbe (_glaberrima_ × _'Saxosa')
Astilbe glaberrima saxosa minor
Astilbe glaberrima saxosa
© RHS 2002
© RHS 2002
© RHS 2002
© RHS 2002
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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
Clay
Loam
Moisture
Moist but well–drained, Poorly–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Pink Purple White Green
Autumn Green
Winter
Position
  • Partial shade
Aspect

East–facing or West–facing or North–facing

Exposure
Sheltered
Hardiness
H5
Botanical details
Family
Saxifragaceae
Native to the UK
No
Foliage
Deciduous
Habit
Clump forming
Genus

Astilbe are rhizomatous herbaceous perennials with attractive, usually ternately divided leaves and erect plume-like panicles of tiny white, pink or purple flowers in summer. The old, brown flower-heads remain attractive in autumn

Name status

Correct

Plant range
Japan

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How to grow

Cultivation

Grow in moist or boggy soil in dappled shade, or in indirect sun where the soil remains moisture-retentive in summer. Drought intolerant, may be damaged in hot sun. Good for waterside planting. See Astilbe cultivation

Propagation

Propagate by division in late winter or early spring, pot divisions under glass and plant out in late spring.

Suggested planting locations and garden types
  • Cottage and informal garden
  • Rock garden
  • Flower borders and beds
Pruning

Cut back after flowering

Pests

May be susceptible to vine weevil

Diseases

May be susceptible to powdery mildews

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