Thalictrum delavayi var. decorum

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elegant Chinease meadow rue

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elegant Chinease meadow rue RHS
elegant Chinease meadow rue RHS

Synonyms

Thalictrum decorum

Herbaceous Perennial
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Produces blue-green leaves composed of leaflets and in early summer large nodding, purpleflowers in loose sprays on vigorous upright stems

Position

Full sun, Partial shade

Soil Types

Clay, Loam

Max Height

1-1.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
1-1.5 metres

Growing Conditions

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

Position

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

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H7

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Ranunculaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming
Potentially harmful
Contact with foliage may produce a mild skin irritation. Wear gloves and other protective equipment when handling
Genus
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
Name Status
Correct
Plant Range
China (Yunnan)

How to Grow

Cultivation

Grow in moist, humus-rich soil in partial shade

Propagation

Propagate by division in spring as new growth begins

Suggested planting locations and garden types

  • Cottage and informal garden
  • Prairie planting
  • Wildlife gardens
  • Flower borders and beds

Pruning

Spent flowers should be removed to prevent over abundance of self sown-seedlings; cut down foliage in late winter or early spring

Pests

Slugs may be a problem

Diseases

May be susceptible to powdery mildews in dry conditions