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Annual BiennialHerbaceous Perennial

Stylophorum lasiocarpum

A biennial or short-lived perennial, to around 50cm high in flower, forming a low mound of lobed and toothed green leaves. Leafy, branching, upright stems bear clusters of bright yellow, poppy-like flowers that open in succession from late spring to late summer, followed by long, silver haired seed capsules that explode when ripe to scatter seed

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
1–2 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Yellow Green
Autumn
Winter
Position
  • Full shade
  • Partial shade
Aspect

East–facing or North–facing or West–facing

Exposure
Sheltered
Hardiness
H6
Botanical details
Family
Papaveraceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Bushy
Genus

A small genus of just three species of herbaceous perennials, native to woodland areas of North America and China. The foliage is green and lobed with wavy edges, and yellow, poppy-like flowers appear on long, bristly stems in spring and summer

Name status

Unresolved

How to grow

Cultivation

Thrives in moist but well-drained, humus rich soil in partial or deep shade; will tolerate dry and heavy soils. Foliage may scorch in sun. Ideal for a shady border or woodland garden

Propagation

Propagate by seed, sown in containers in autumn, or by division in spring, though plants may be slow to re-establish. May self-seed in place in good conditions

Suggested planting locations and garden types
  • Cottage and informal garden
  • Wildflower meadow
  • Flower borders and beds
Pruning

Deadhead to prolong flowering if seed is not required

Pests

May be susceptible to slugs and snails

Diseases

Generally disease-free

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