Also known as Persicaria, Redleg, Lady’s-thumb or Redshank.
Endemic to Europe and Asia, has been introduced to North America and is naturalized in all mainland states as a ruderal wee occurring along roadsides, riverbanks and on fallow ground.
Contains persicarin and tannins. In herbal medicine it is used against diarrhoea and infections, fresh leaves may be used to staunch bleeding.
Leaves and young shoots are palatable and nutritious leaf vegetable but it is often seen as a weed and rarely cultivated. With alum used as a mordant a yellow dye can be made from this plant.