This weed, also called starwort, satin flower, or starweed, prefers damp, shady areas with rich soil. It invades home lawns when they begin to thin out from insects, disease, mechanical damage, or shade. Common chickweed reproduces by seeds and by creeping stems that root at their joints wherever they touch the soil. It grows vigorously in cool, wet weather, forming a dense mat that crowds out desirable plants. The leaves are 1/2 inch to 2 inches and heart-shaped. Small white flowers bloom in clusters on the ends of the stems from March to December. In mild-winter areas, they bloom and produce seeds throughout the winter.
Treat the lawn when the plant is growing actively in the early spring or late fall. Repeated applications may be necessary.