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Persicaria capitata
Also called Pinkhead Smartweed, Pink Head Knotweed, Japanese Knotweed, Knotweed, Pink Headed Persicaria, Pink Head Persicaria, Pink Knotweed
Persicaria capitata is a low, creeping herb from Asia, grown for its pink-headed flower clusters and often grown as a ground cover. It is a vigorous spreader that has become invasive in some regions, so keep it contained.
Persicaria capitata, the pink-headed persicaria, pinkhead smartweed, pink knotweed, Japanese knotweed, or pink bubble persicaria, is an Asian species of plants in the genus Persicaria within the Polygonaceae (US: buckwheat) family. It is native to Asia (China, South Asia, Indochina) and grown as an ornamental in other countries. It has become naturalized in Australia, South Africa and a few scattered locations in the Americas.
Persicaria capitata is a native of Asia. It has naturalised in parts of Australia and North America. Between 2008 and 2013 it has been recorded as an invasive plant in Ireland from the Counties Fermanagh, Kilkenny, Wexford and Mayo.
Persicaria capitata has been widely used in China in the treatment of various urologic disorders including urinary calculi and urinary tract infections.
Amphibious Bistort · Chinese Knotweed · Water pepper · Curlytop knotweed · Redshank · Persicaria microcephala · Small water-pepper · Vietnamese Coriander · Pinkweed · Asiatic Tearthumb · Dotted Smartweed · Persicaria tinctoria
Text excerpted from the Wikipedia article Persicaria capitata by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
