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Burncoose Nurseries - part of the Caerhays Estate
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  • PERSICARIA affinis
    PERSICARIA affinis
    © Burncoose Nurseries, all pictures for illustrative purposes only.
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    PERSICARIA affinis  PERSICARIA affinis  PERSICARIA affinis  PERSICARIA affinis  ALCHEMILLA mollis and PERSICARIA affinis 'Superba'
© Burncoose Nurseries, all pictures for illustrative purposes only. EUPHORBIA x pasteurii and PERSICARIA
© Burncoose Nurseries, all pictures for illustrative purposes only. Monarda ‘Prairie Night’, Eryngium ‘Picos Blue’, Argyranthemum ‘Chelsea Girl’, Blue Phlox and Persicaria
© Burncoose Nurseries, all pictures for illustrative purposes only.
    >

    PERSICARIA affinis

    Commonly known as Knotweed, Polygonum

    Deep pink
    plant size comparison icon
    1.5 to 2 Litre   - Click to view photo
    Delivery Information
    Estimated availability autumn 2026 Any time SEPT-DEC
    individually £13.00 each , 3+ £11.00 each 
    Estimated availability autumn 2026 Any time SEPT-DEC - Not yet confirmed. Could be any time between September and December.
     
    Full Plant Details - Sun/Soil & other attributes
    • Flowering
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      Jan
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      Feb
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      Mar
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      Apr
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      May
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      Jun
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      Jul
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      Aug
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      Sep
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      Oct
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      Nov
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      Dec
    • Pests & Diseases
      None
    • Place of origin
      Himalayas
    • Resistant to honey fungus
      These plants have little or few problems with honey fungus.
    • Evergreen
      Dark-green leaves 5-15cm (2-6in) long, turning red-bronze in autumn.
    • Shades of pink
      All shades of pink through to Carmine (red)
      Deep pink
    • Cup-shaped
      5mm (¼in) on spikes 5-8cm (2-3in) long
    • Spikes
    • Border
      Suitable for a mixed or herbaceous border
    • Rockery (inc alpine)
    • Fully hardy
    • Height
      25cm (10in)
    • Spread
      60cm (24in)
    • Ground cover
      These plants are typically low growing and spread quickly to inhibit weed growth on areas of bare soil
      Creeping perennial. Produces tight, upright spikes 5-8cm (2-3in) long of small flowers to 5mm (¼in) long. Flowers fade to pale pink.
    • Hardy - cold winter
      Hardy in most places throughout the UK even in severe winters. May not withstand open/exposed sites or central/northern locations. Plant can withstand temperatures down to -15°C (5°F)
    • Tolerates all
      Any moist soil
    • Full sun
    • Partial shade
    • Rabbit Resistant
    View Planting Tips and Care Advice

    varieties

    Useful extras...

    Vermin & Pest Control
    This is a non-biological non-chemical plant insecticide and mildewcide. Works against the physical motion of the insect. Perfect for all plants and edible crops.
    500 ml
    £8.00
    Fertilisers & Feeds - Empathy
    All-purpose organic concentrated seaweed feed that is a ready to use, derived from sustainable harvested kelp, that can be used on all outdoor and indoor plants, except acid loving plants. Perfect used in conjunction with Rootgrow™.
    1 ltr
    £8.50
    Fertilisers & Feeds - Empathy
    Creates a mini-meadow for attracting bees, butterflies and bugs to your garden. 200g sachet which will cover 3 square metres. Contains Rootgrow™ mycorrhizal fungi.
    3m²
    £7.00
    10m²
    £15.50
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