Aster 'Duchess' (mixed)
China aster [Duchess Mixed]
An upright, strong, herbaceous annual or biennial up to 60cm in height when in flower, with green leaves on branching stems and chrysanthemum–like flowers with upward-curving, double ray petals in a range of colours including pink, deep rose-pink, light and dark purple, white and yellow, from late summer and into autumn
Buy this plant
Size
Ultimate height
0.5–1 metresTime to ultimate height
1 yearUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Pink Purple Red White Yellow | Green | ||
| Autumn | Green | |||
| Winter |
Position
- Full sun
Aspect
West–facing or South–facing or East–facing
Exposure
Sheltered Hardiness
H2Botanical details
- Family
- Asteraceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Bushy
- Genus
Callistephus are bushy, upright annuals with coarsely toothed ovate leaves and large, solitary, daisy-like flower-heads, often double in cultivars, in late summer and autumn
- Name status
Trade
How to grow
Cultivation
Grow in a sheltered site in fertile, neutral to alkaline, moist but well-drained soil in full sun. Tall plants may require staking
Propagation
Propagate by seed sown at 16°C in early spring or in situ in mid-spring
Suggested planting locations and garden types
- City and courtyard gardens
- Cottage and informal garden
- Patio and container plants
- Bedding
- Flower borders and beds
Pruning
Deadhead to prolong flowering
Pests
Diseases
May be susceptible to wilt diseases
Get involved
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.