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PERSICARIA affinis
Commonly known as Knotweed, Polygonum
Deep pink
Full Plant Details - Sun/Soil & other attributes - Click to close
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Floweringlocal_floristJanlocal_floristFeblocal_floristMarlocal_floristAprlocal_floristMaylocal_floristJunlocal_floristJullocal_floristAuglocal_floristSeplocal_floristOctlocal_floristNovlocal_floristDec
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Pests & Diseases
None -
Place of origin
Himalayas -
Resistant to honey fungusThese plants have little or few problems with honey fungus.
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EvergreenDark-green leaves 5-15cm (2-6in) long, turning red-bronze in autumn.
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Shades of pink
All shades of pink through to Carmine (red)Deep pink -
Cup-shaped5mm (¼in) on spikes 5-8cm (2-3in) long
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Spikes
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BorderSuitable for a mixed or herbaceous border
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Rockery (inc alpine)
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Fully hardy
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Height
25cm (10in) -
Spread
60cm (24in) -
Ground coverThese plants are typically low growing and spread quickly to inhibit weed growth on areas of bare soilCreeping perennial. Produces tight, upright spikes 5-8cm (2-3in) long of small flowers to 5mm (¼in) long. Flowers fade to pale pink.
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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 allAny moist soil
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Full sun
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Partial shade
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Rabbit Resistant
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Persicaria - Growing Guide