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Persicaria runcinata - Knotweed

Persicaria runcinata
Knotweed

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This plant carries a 12 months recovery warranty

More information

The Persicaire runcinata, with small clusters of bright pink flowers.
Height at maturity
40 cm
Spread at maturity
40 cm
Exposure
Sun, Partial shade
Hardiness
Hardy down to -29°C
Soil moisture
Moist soil, Damp soil
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Recommended planting time February to April, September to November
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Flowering time August to October
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Description

Cluster-forming plant capable of forming large colonies in damp and clayey soils. The suckering stems bear curious lyre-shaped leaves at the base, pointed at the top. The bright pink flowers, somewhat resembling those of Spanish grass, are arranged in small round clusters at the ends of the stems, from summer until frost.

Flowering

Flower colour pink
Flowering time August to October

Foliage

Foliage persistence Deciduous
Foliage colour purple

Plant habit

Height at maturity 40 cm
Spread at maturity 40 cm
Growth rate normal

Botanical data

Genus

Persicaria

Species

runcinata

Family

Polygonaceae

Other common names

Knotweed

Origin

Cultivar or hybrid

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Planting and care

Wet and clay soils.

Planting period

Recommended planting time February to April, September to November

Intended location

Type of use Border
Hardiness Hardy down to -29°C (USDA zone 5) Show map
Ease of cultivation Amateur
Planting density 5 per m2
Exposure Sun, Partial shade
Soil pH Neutral
Soil type Clayey (heavy), Clayey-chalky (heavy and alkaline), Silty-loamy (rich and light)
Soil moisture Moist soil, Damp soil, Wet and clay soils.

Care

Overwinter Can be left in the ground

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