Cirsium japonicum
no-azami
A clump-forming biennial or short-lived perennial, up to 2m high, with deeply lobed to pinnately divided, spiny dark green leaves. In late summer to early autumn, produces tall, branching stems bearing thistle-like flowers, with tubular pink or lilac purple petals
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Size
Ultimate height
1.5–2.5 metresTime to ultimate height
1–2 yearsUltimate spread
0.5–1 metresGrowing conditions
Moisture
Moist but well–drained, Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Pink Purple | Green | ||
| Autumn | Pink Purple | Green | ||
| Winter |
Position
- Full sun
- Partial shade
Aspect
East–facing or West–facing or South–facing
Exposure
Exposed or Sheltered Hardiness
H7Botanical details
- Family
- Asteraceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Clump forming
- Genus
Cirsium may be biennials or perennials with spiny leaves and typical thistle-type flower-heads
- Name status
Correct
- Plant range
- Japan
How to grow
Cultivation
Thrives in moist soil in full sun, but will tolerate a range of soils and positions
Propagation
Propagate by seed
Suggested planting locations and garden types
- Wildflower meadow
- Wildlife gardens
Pruning
Deadhead if seed is not required
Pests
Generally pest-free
Diseases
May be susceptible to powdery mildews
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