A weed with heart-shaped or almost round leaves grows in the lawn. It has no stem, but leaves grow directly from a nut-like crown. In the spring, it has white, blue, or purple flowers. This short-lived perennial weed is called wild violet, field pansy, or hearts-ease. The leaves are dark green, with slightly saw-toothed edges. The flowers resemble pansies, to which they are related. Wild violets thrive in moist, shaded or semi-shaded conditions.
Violets are persistent. Treat in early spring to prevent seeds from sprouting.