Perennial weed ( Prunella vulgaris ) in the mint family, native to North America and widespread throughout the continent.
Growing 614 in. (1436 cm) tall, self-heal is often a low weed in lawns. The often-prostrate branches root readily wherever they touch soil. Tiny, two-lipped, lilac-coloured or white flowers are clustered into noticeable dense, spikes. Leaves have sparsely toothed or smooth margins. Regarded in medieval times as a cure-all, the dried leaves and flowers are still brewed for soothing sore throats.