About
Aster amellus 'Blue King' is a clump-forming perennial that grows to about 60 cm in height. It features an upright or slightly arching growth habit and has lance-shaped, medium green foliage. During the late summer to autumn period, this plant produces loose clusters of violet-blue flower heads, each measuring up to 5 cm across, with yellow centers.
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
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Well-drained
- Aspect
- South-facing, West-facing, East-facing
- Exposure
- Exposed, 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
- City and courtyard gardens, Coastal, Cottage and informal garden, Patio and container plants
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
- Propagation
- Propagate by division in spring or root softwood basal cuttings in spring
- Pest resistance
- May be susceptible to leaf and bud eelworms, slugs and snails
- Disease resistance
- Asters may be susceptible to Verticillium wilt, Powdery mildews and grey moulds