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Herbaceous Perennial

Thalictrum Purple Wings ('Macthapuwi')

An upright, tall and narrow, clump-forming perennial to around 120cm high with blue-green, divided foliage and sprays of double, lilac-purple flowers held above the foliage on dark stems from July to September

Synonyms

Thalictrum 'Macthapuwi'
Thalictrum 'Purple Wings'

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Ultimate height

1–1.5 metres

Time to ultimate height

2–5 years

Ultimate spread

0.5–1 metres

Chalk

Loam

Sand

Moisture

Moist but well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun
Partial shade

Aspect

East–facing or North–facing or South–facing or West–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)

Botanical details

Family: Ranunculaceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Clump forming
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: Trade

How to grow

Cultivation

Grows best in a moist, humus-rich soil in sun or partial shade at the back of the border as a backdrop for other perennials. May require staking, particularly in windy or wetter areas. Protect from strong winds. See staking perennials for further advice

Propagation

Propagate by division every 3 to 4 years in spring as new growth begins

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Flower borders and beds
Wall side borders

Pruning

Faded flower stems can be cut back in late autumn or in spring before new growth starts emerging. Cutting back will also prevent self-seeding if this is not required

Pests

May be susceptible to slugs

Diseases

May be susceptible to powdery mildews in dry conditions

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