This grower is sure of this plant identification.
Various sizes in ground. Many small recent seedlings or very well established plants.
Delicious, especially in curry or fish pie.
French sorrel, Round-leaved sorrel, Garden sorrel, Sorrel
Rumex scutatus (French sorrel). This is a low growing perennial. It is grown mainly to be used in salads or soups with its distinctive flavour. The leaves are oval-shaped and pale green, and the flowers are yellow-red.
They will thrive in full sun with moderately fertile, well-drained soil. You can propagate from seeds which should be sown in spring or by division in autumn.