Polygonaceae: upright or sprawling hairless annual to 60cm, found on disturbed ground ad arable field margins. The flowers are pink in terminal spikes, flowering from June-October. The leaves are narrow, oval, usually showing a dark central mark. Widespread and common. Native to Eurasia and present as an introduced and invasive species in North America.
This plant contains persicarin and tannins. In medicine, Redshank is used against diarrhoea and infections. The leaves and young shoots may be eaten as a palatable and nutritious leaf vegetable. It is often seen as a weed and rarely cultivated. A yellow dye can be produced from this plant with alum used as a mordant.
Succeeds in an ordinary garden soil but prefers a moisture retentive not too fertile soil in sun or part shade. Sow seeds in spring in situ.