Prunella Vulgaris is part of the mint family and has been used for centuries as a lawn cover, growing well in marshy wet areas spreading rapidly.
Raw self-heal leaves are edible, suitable as a pot herb and have a subtle bitter taste. Although they taste better cooked, a lot of the nutrients are lost (as they are in vegetables as well) in this process. Toss leaves onto a salad, in a soup or stew or once you have mashed potatoes, add them to this. A cold water infusion of freshly chopped (or dried) leaves makes a nourishing drink. (Boil water to make tea as well.) This is an edible plant that can help many health ailments.