About
Actaea japonica is a herbaceous perennial characterized by clusters of foliage that can grow as long as 75 cm, featuring divided and lobed leaflets. In late summer and autumn, it produces narrow, branched spikes that can extend to 1 meter in height, adorned with small, soft white flowers.
About the genus
Actaea consists of herbaceous perennials that grow from rhizomes. They feature compound leaves and produce small, creamy-white flowers arranged in compact, upright racemes that can be simple or branched. These flowers may later develop into toxic berries that can be red, black, or white, or into clusters of star-shaped brown follicles.
Growing conditions
- Sunlight
- Partial shade
- Soil type
- Clay, Loam
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- North-facing, West-facing, East-facing
- Exposure
- Sheltered
- UK hardiness
- H7
Plant details
- Plant type
- Herbaceous Perennial
- Habit
- Clump forming
- Foliage
- Deciduous
- Height
- 0.5-1 metres
- Spread
- 0.5-1 metres
- Time to full height
- 2-5 years
- Suggested uses
- Wildflower meadow, City and courtyard gardens, Cottage and informal garden
- Native to
- Japan
- Toxicity
- Harmful if eaten. Wear gloves and other protective equipment when handling
Care notes
- Cultivation
- Best grown in cool, moist, reasonably fertile soil in partial shade but will tolerate most soils if enriched with organic matter. May need staking
- Pruning
- Cut back after flowering
- Propagation
- Propagate by seed sown in pots in a cold frame in autumn or by division in early spring
- Pest resistance
- Generally pest-free
- Disease resistance
- Generally disease-free