Skip to site navigation

Thalictrum delavayi AGM

Home  |  Plants > Plant Selector > Thalictrum delavayi AGM

© RHS

Characteristics

Plant type

Herbaceous Perennial

Habit

Columnar/Upright

Toxicity

Contact with foliage may irritate the skin

Resilience

Hardiness

H7 (very hardy)

Colour

Flower

Cream and Pale Purple in Summer

Foliage

Blue and Green in Spring and Summer

Size

Ultimate height

1-1.5 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

2-5 years


Preferred common name

Chinese meadow rue

Family

Ranunculaceae


Thalictrum can be rhizomatous or tuberous perennials with ternately or pinnately divided, often attractive foliage, and panicles or racemes of small flowers with showy stamens and sometimes large colourful petal-like sepals

T. delavayi is an upright herbaceous perennial to 1.5m, with large leaves divided into many small oblong leaflets, and large open panicles of lilac-mauve flowers 2cm in width, with prominent cream stamens

Synonym(s)

  • Thalictrum dipterocarpum misapplied

How to grow

Sunlight

  • Part shade

Aspect

  • East-facing or West-facing
  • Sheltered

Cultivation

Grow in moist, humus-rich soil in partial shade. May need staking

Soil

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

Propagation

Propagate by seed in pots in a cold frame as soon as seed is ripe or in early spring. Propagate by division in spring as new growth begins

Suggested planting locations and garden types

Cottage/Informal Garden, Flower borders and beds, Wildlife Gardens or Cut Flowers


How to care

Pruning

Cut down stems once flowering is over

Pests

Generally pest free

Diseases

May be subject to powdery mildews in dry conditions