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Persicaria - 'Kewform' (Knotweed)

Type Herbaceous flower, Deciduous, Ground cover, Flowering
Form Low Growing or Spreading Plant, Architectural Form
Size Low Border / Edging / Ground Cover Plant (up to 50cm height)
Colours Dark pink Flowers (Summer), Medium green Foliage
Care Some Maintenance Required - Tough Plant
Hardiness Frost hardy, Drought Tolerant
Growth Medium Growing Plant
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Persicaria - Cultivation Notes

Preferring any moist and relatively fertile, Knotweed will flourish in full sun or part shade. Making great ground cover for shady areas, but beware of invasive roots. Mulch every 2/3 years plus divide if scraggily.

Strengths, Weaknesses & Design Usage

Strengths of Persicaria:

  • Sun loving drought tolerant plant
  • Attractive autumn colour
  • All round tough plant suitable for problem areas
  • Suitable for container growing
  • Architectural plant – ideal as a ‘stand out’ plant
  • Tolerates full sun and sandy, drought-prone soils
  • Tolerates cold exposed locations
  • Tolerates heavy clay soils

Weaknesses of Persicaria

  • Invasive/spreading root growth

Design & Plant Use for Persicaria:

  • Summer flowering herbaceous plant suitable for border planting
  • Low growing ground cover planting on dry chalky soils

View all the plants listed in Genus Persicaria

View other ground cover plants with dark pink flowers, or ground cover plants with medium green foliage

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