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Herbaceous Perennial

Bistorta amplexicaulis var. pendula

weeping red bistort

A deciduous to semi-evergreen, clump-forming perennial to 80cm with ovate green leaves and weeping, dark magenta-pink flowers which appear from in mid-summer through to autumn. At their best in cooler summer conditions or in the autumn, and suitable for smaller gardens or the front of a flower border

Synonyms

Persicaria amplexicaulis var. pendula

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Ultimate height

0.5–1 metres

Time to ultimate height

2–5 years

Ultimate spread

0.5–1 metres

Chalk

Clay

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

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)

Botanical details

Family: Polygonaceae
Native to GB / Ireland: No
Foliage: Deciduous or Semi evergreen
Habit: Clump forming, Pendulous weeping
Genus: A genus of herbaceous, rhizomatous perennials with erect, unbranched stems, bearing short terminal spikes of small, white or pink, bell-shaped flowers
Name status: Correct
Plant range: Central Nepal to Bhutan

How to grow

Cultivation

Grow in moisture-retentive but well-drained soil in full sun or partial shade

Propagation

Propagate by division in spring or autumn

Suggested planting locations and garden types

Cottage and informal garden
Wildlife gardens
Wildflower meadow
Flower borders and beds

Pruning

No pruning required

Pests

Generally pest-free but may be susceptible to slugs and snails

Diseases

Generally disease-free

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