Problem: Mouse-ear Chickweed
Cerastium vulgatum Mouse-ear chickweed is a troublesome perennial weed found throughout the country. It grows in full sunlight on infertile and heavily watered soil. Mouse-ear chickweed invades lawns thinned out due to insects, disease, or mechanical damage. It reproduces by seeds and by stems that root easily at their joints wherever they touch the soil. It has a low, prostrate growing habit and forms a dense mat that crowds out grass.
Treat the lawn when the plant is growing actively in the early spring or late fall. Repeated applications may be needed.