Centaurea 'John Coutts'
knapweed 'John Coutts'
A vigorous herbaceous perennial, with jagged lobed leaves white-felted beneath, and showy purplish-pink flower-heads 6cm across in summer and often into early autumn
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Size
Growing conditions
Colour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | ||||
|---|---|---|---|---|
| Summer | ||||
| Autumn | ||||
| Winter |
Position
Aspect
Exposure
Botanical details
- Family
- Asteraceae
- Native to GB / Ireland
- No
- Genus
Centaurea may be annuals, perennials or subshrubs, with simple or pinnately lobed leaves and showy thistle-like flowers-heads, often with enlarged outer florets
- Name status
Accepted
How to grow
Cultivation
Grow in well-drained soil in full sun. Attractive to bees and butterflies
Propagation
Propagate by seed in containers in a cold frame in spring. Propagate by division in spring or autumn
Suggested planting locations and garden types
Pruning
No pruning required
Pests
Generally pest-free
Diseases
Powdery mildews may occur
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.