Polygonaceae: a variable perennial to 60cm, found in many grassy habitats. The whole flower turns red as it goes over. The flowers are a reddish colour, in slender spikes, appearing from May-July. The leaves are deep green leaves, are arrow-shaped, narrow, the leaves taste mildly of vinegar. Widespread and common.
The leaves are used raw or cooked, they make a thirst-quenching on their own, or can be added to salads, used as a potherb or pureed and used in soups. A delicious lemon-like flavour, liked by most people who try them, they can be rather overpowering in quantity and are more generally used as a flavouring in mixed salads.
The fresh or dried leaves are astringent, diuretic, laxative and refrigerant, they are used to make a cooling drink in the treatment of fevers and are especially useful in the treatment of scurvy.
Sow spring in situ any time of the year, the leaves can be harvested within 8 weeks from sowing. Easy.