About
Aster koraiensis is a rhizomatous perennial characterized by its upright growth and elongated, dark green leaves. It produces sizable flower heads composed of lavender ray florets encircling a central cluster of golden yellow disc florets. This plant blooms from early to mid-autumn and serves as a valuable resource for pollinators.
About the genus
Aster includes perennials, annuals, and subshrubs, typically characterized by slender leaves and flowers that resemble daisies, either appearing alone or in clusters.
Growing conditions
- Sunlight
- Full sun, Partial shade
- Soil type
- Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained, Well-drained
- Aspect
- East-facing, South-facing, West-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H5
Plant details
- Plant type
- Herbaceous Perennial
- Habit
- Clump forming, Columnar upright
- Foliage
- Deciduous
- Height
- 0.5-1 metres
- Spread
- 0.1-0.5 metres
- Time to full height
- 1-2 years
- Suggested uses
- Cottage and informal garden
- Native to
- Korea
Care notes
- Cultivation
- Grow in well-drained, moderately fertile soil in an open, sunny position. See aster cultivation
- Pruning
- Deadhead spent flowers to tidy, cut back stem close to the ground in late autumn or beginning of spring before the new shoots emerge
- Propagation
- Propagate by division, seeds or root softwood basal cuttings in spring
- Pest resistance
- May be susceptible to leaf and bud eelworms, slugs and snails
- Disease resistance
- May be susceptible to Fusarium wilt, Powdery mildews and grey moulds