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Herbaceous PerennialSynonym

Persicaria affinis 'Kabouter'
  • RHS Plants for pollinators

knotweed 'Kabouter'

A mat-forming perennial to about 20cm high, with elliptic to lance-shaped dark green leaves, that turn red-bronze in autumn. From midsummer to mid-autumn, produces flower spikes that open pale pink and mature to deep reddish-pink

Synonyms
Persicaria affinis 'Kabouter'
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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Clay
Loam
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Pink Green
Autumn Pink Green Red Bronze Brown
Winter
Position
  • Full sun
  • Partial shade
Aspect

East–facing or South–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H7
Botanical details
Family
Polygonaceae
Native to the UK
No
Foliage
Deciduous
Habit
Matforming
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

Unresolved

How to grow

Cultivation

Easy to grow in any moist 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
  • Flower borders and beds
  • Ground cover
Pruning

No pruning required but remove spent flowers if necessary and comb out old leaves

Pests

Generally pest-free

Diseases

Generally disease-free

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