About
Astilbe rivularis var. myriantha is a perennial that reaches heights of up to 1.8 meters, creating a substantial clump of attractive, divided green leaves that have a hint of bronze. In late summer, it produces large, branched clusters of greenish-white flowers that hang gracefully.
About the genus
Astilbe are perennial plants with rhizomes, characterized by their dissected leaves that typically have a ternate structure. In summer, they produce upright panicles filled with small flowers in shades of white, pink, or purple. The dried flower heads persist into autumn, adding interest to the landscape.
Growing conditions
- Sunlight
- Full sun, Partial shade
- Soil type
- Clay, Loam
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained, Poorly-drained
- Aspect
- East-facing, West-facing, North-facing
- Exposure
- Sheltered
- UK hardiness
- H4
Plant details
- Plant type
- Bogs, Herbaceous Perennial
- Habit
- Clump forming
- Foliage
- Deciduous
- Height
- 1.5-2.5 metres
- Spread
- 0.5-1 metres
- Time to full height
- 2-5 years
- Suggested uses
- Architectural, Cottage and informal garden
- Native to
- SW China, regional Himalayas
Care notes
- 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
- Pruning
- Cut back after flowering
- Propagation
- Propagate by division in late winter or early spring, pot divisions under glass and plant out in late spring
- Pest resistance
- Generally pest-free but may be susceptible to vine weevil
- Disease resistance
- May be susceptible to powdery mildews