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PERSICARIA
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.
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Deciduous
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Evergreen
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Semi-evergreen - Keeps some of its foliage all year, and will drop some leaves as well.
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Red -
Shades of pink - All shades of pink through to Carmine (red) -
White -
Full sun -
Partial shade -
May cause skin allergy or irritant - Having skin or eye contact with these plants could result in an allergic reaction, burning or rash. -
Additional Features - Good to know - poker type flowers. Some have attractive autumn colour. Some are invasive. Wildlife plant - insects. -
Pests & Diseases - generally trouble-free. -
Place of origin - various habitats around the world. -
Resistant to honey fungus - These plants have little or few problems with honey fungus.
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Soil Conditions - Fertile moist well-drained soil - will tolerate any moist soil
Buy Varieties of PERSICARIA
PERSICARIA affinis 'Darjeeling Red' >
Commonly known as: Knotweed, Polygonum.
Excellent ground cover with bright crimson flowers
PERSICARIA alpina >
Commonly known as: Alpine knotweed.
(syn. P. polymorpha) - tall growing with tall stems or plumes of creamy-white flowers
PERSICARIA amplexicaulis 'Blackfield' >
Commonly known as: Knotweed, Polygonum.
Slender flowers in deep red-black. A smouldering beauty
PERSICARIA bistorta 'Superba' >
Commonly known as: Adderwort, Bistort, Polygonum.
Clear pink poker flowers
PERSICARIA microcephala 'Red Dragon' >
Commonly known as: Bistort, Knotweed.
Tall and spreading variety with dramatic brownish-red leaves with black markings
PERSICARIA 'Silver Dragon' >
Commonly known as: Knotweed.
Silvery-green pointed leaves which are darker on the edge and veined with red
PERSICARIA vaccinifolia >
Commonly known as: Knotweed, Polygonum.
Tiny pink flowers, good ground cover, and excellent autumn colour
Useful extras...
Harrod Horticulture Plant Supports - Plant & Border Supports
Curved border restraints
The border restraints are made from sturdy, solid 6mm galvanised steel wire and powder coated dark olive green, available in a variety of sizes providing strong plant support to stop plants falling across lawns and paths
4 options from £14.50
Fertilisers & Feeds - Vitax
Q4 Pelleted Fertiliser
A useful fertiliser suitable for use on a wide variety of plants. Q4 provides all the nutrients and trace elements essential for vigorous growth, abundant flowering and ripening of fruit.
3 options from £6.00
Fertilisers & Feeds - Empathy
Rootgrow mycorrhizal fungi
Recommended by the RHS. Contains Rootgrow™ mycorrhizal fungi. Suitable for all trees and shrubs (except rhododendrons, azaleas, heathers, cranberries and blueberries)
2 options from £6.00
Fertilisers & Feeds - Empathy
All-purpose Seaweed Stimulant
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™.
Only £7.50
