Hylomecon japonica
A clump-forming, spreading perennial to 30cm tall, with pale green mostly basal leaves composed of leaflets and bearing poppy-like deep-yellow flowers 5cm across, from late spring to summer
Size
Ultimate height
0.1–0.5 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Yellow | Green | ||
|---|---|---|---|---|
| Summer | Yellow | Green | ||
| Autumn | Green | |||
| Winter |
Position
- Full shade
- Partial shade
Aspect
East–facing or North–facing
Exposure
Sheltered Hardiness
H5Botanical details
- Family
- Papaveraceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Clump forming
- Name status
Correct
- Plant range
- Far East
How to grow
Cultivation
Grow in moist but well-drained neutral to acid soil rich in organic matter, in a position in partial or deep shade. Ideal as a wild or woodland garden plant
Propagation
Propagate by seed as soon as ripe or in autumn or propagate by division in spring
Suggested planting locations and garden types
- City and courtyard gardens
- Cottage and informal garden
- Wildlife gardens
- Flower borders and beds
Pruning
Tidy after flowering is finished in late summer or autumn
Pests
May be susceptible to slugs and snails, especially in spring
Diseases
Generally disease-free
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