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Euphorbia palustris AGM

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© RHS

Characteristics

Plant type

Bog or Herbaceous Perennial

Habit

Bushy

Toxicity

All parts are highly toxic by ingestion; sap may irritate skin and eyes

Resilience

Hardiness

H7 (very hardy)

Colour

Flower

Green and Yellow in Spring

Foliage

Green in Spring and Summer
Orange and Yellow in Autumn

Size

Ultimate height

0.5-1 metres

Ultimate spread

0.5-1 metres

Time to ultimate height

2-5 years


Preferred common name

marsh spurge

Family

Euphorbiaceae


Euphorbia can be annuals, perennials, shrubs or succulents, with milky sap and small flowers held within cupped, often colourful bracts

E. palustris is a bushy herbaceous perennial to 90cm, the erect stems with narrow, fresh-green leaves often turning yellow and orange in autumn. Flowers bright greenish-yellow, in large terminal clusters in late spring

How to grow

Sunlight

  • Full sun

Aspect

  • South-facing or West-facing
  • Exposed or Sheltered

Cultivation

Prefers permanently moist soil in full sun

Soil

  • Moist but well-drained
  • Neutral, Acid or Alkaline
  • Clay or Loam

Propagation

Propagate by seed sown in containers in spring. Propagate by division in early spring or take basal cuttings in spring or early summer; dip cut surfaces in charcoal or lukewarm water to prevent bleeding

Suggested planting locations and garden types

Cottage/Informal Garden or Flower borders and beds


How to care

Pruning

Pruning group 6

Pests

Generally pest free

Diseases

Generally disease free