Common sorrel or garden sorrel (Rumex acetosa), often simply called sorrel, is a perennial herb that is cultivated as a garden herb or leaf vegetable (pot herb). Other names for sorrel include spinach dock and narrow-leaved dock. Sorrel is a slender plant about 60 cm high, with roots that run deep into the ground, as well as juicy stems and edible, oblong leaves. The lower leaves are 7 to 15 cm in length, slightly arrow-shaped at the base, with very long petioles. The upper ones are sessile, and frequently become crimson.