Chelidonium lasiocarpum

Synonyms

Stylophorum lasiocarpum

Annual Biennial Herbaceous Perennial

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

Position

Full shade, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
1–2 years
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained or Well–drained
pH
Acid or Alkaline or Neutral

Position

Full shade Partial shade
Aspect
East–facing or North–facing or West–facing
Exposure
Sheltered
Hardiness
H6

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Papaveraceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
Genus
Chelidonium are erect biennials or short-lived perennials with copious orange sap; leaves are pinnately dissected and poppy-like flowers are borne in loose umbels in summer
Name Status
Correct

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