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Commonly known as (Polygonum) - Knotweed
Genus of about 150 annuals and perennials. They may be evergreen, semi-evergreen or deciduous and many spread by stolons leading to a spreading habit which can be invasive. This habit and their commonly used name knotweed can give cause for concern but used wisely they are worthy performers. They are found in a variety of habitats worldwide and most have long-lasting spikes of flowers followed by distinctive 3-angled or ovoid fruits.
Semi-evergreen Keeps some of its foliage all year, and will drop some leaves as well.
Shades of pink All shades of pink through to Carmine (red)
May cause skin allergy or irritant Having skin or eye contact with these plants could result in an allergic reaction, burning or rash.
Good to know - poker type flowers. Some have attractive autumn colour. Some are invasive. Wildlife plant - insects.
Pests & Diseases
Place of origin
various habitats around the world.
Resistant to honey fungus - These plants have little or few problems with honey fungus.
Fertile moist well-drained soil - will tolerate any moist soil
Buy Varieties of PERSICARIA
Excellent ground cover with bright crimson flowers
(syn. P. Polymorpha) - tall growing with tall stems or plumes of creamy-white flowers
Slender flowers in deep red-black. A smouldering beauty
Clear pink poker flowers
Tall and spreading variety with dramatic brownish-red leaves with black markings
Silvery-green pointed leaves which are darker on the edge and veined with red
Tiny pink flowers, good ground cover, and excellent autumn colour