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Persicaria affinis 'Donald Lowndes' AGM

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© RHS 2002

Characteristics

Plant type

Alpine/Rockery or Herbaceous Perennial

Habit

Mat forming

Resilience

Hardiness

H5 (hardy - cold winter)

Colour

Flower

Pale Pink and Dark Pink in Autumn and Summer

Foliage

Bronze and Green in Autumn
Green in Spring, Summer and Winter

Size

Ultimate height

0.1-0.5 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

5-10 years


Preferred common name

knotweed 'Donald Lowndes'

Family

Polygonaceae


Persicaria can be annuals, herbaceous or evergreen perennials or sub-shrubs with simple leaves and small bell-shaped white or pink flowers in long-lasting spikes or panicles

'Donald Lowndes' is a mat-forming, partially evergreen perennial to 20cm in height, with dark green, narrowly elliptic leaves and erect spikes of small pink flowers which darken with age, finally turning orange-brown

Synonym(s)

  • Polygonum affine 'Donald Lowndes'

How to grow

Sunlight

  • Full sun
  • Part shade

Aspect

  • South-facing, East-facing or West-facing
  • Exposed or Sheltered

Cultivation

Easy to grow in any moist soil in full sun or partial shade

Soil

  • Moist but well-drained
  • Alkaline, Neutral or Acid
  • Clay, Loam, Sand or Chalk

Propagation

Propagate by division in spring or autumn

Suggested planting locations and garden types

Banks and Slopes, City/Courtyard Gardens, Coastal, Cottage/Informal Garden, Flower borders and beds, Garden Edging, Gravel Garden, Ground Cover, Patio/Container Plants or Rock Garden


How to care

Pruning

Deadhead faded spikes

Pests

Generally pest free

Diseases

Generally disease free