Thalictrum isopyroides

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Isopyrum-like meadow rue

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Isopyrum-like meadow rue RHS

Synonyms

Thalictrum flavum 'Chollerton', Thalictrum from Afghanistan

Herbaceous Perennial
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A diminutive herbaceous species with glaucous, fern-like foliage. Dainty, fluffy panicles of pale yellow flowers are borne in early summer

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

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

Growing Conditions

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

Position

Full sun Partial shade
Aspect
East–facing or South–facing or West–facing
Exposure
Exposed or 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)
H6

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Ranunculaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
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
C & SW Asia

How to Grow

Cultivation

Prefers sun or semi-shade. Plants can tolerate dry conditions as they grow naturally in rocky areas

Propagation

Propagate by division in spring or propagate by seed. Sow seed as fresh as possible without bottom heat. Germination may take many months

Suggested planting locations and garden types

  • Cottage and informal garden
  • Flower borders and beds

Pruning

Tidy up plants in late autumn

Pests

Generally pest-free

Diseases

Generally disease-free