How to Kill Carpetweed in the Winter
- 1). Rake the lawn before applying the pre-emergent herbicide. This removes fallen leaves or debris from winter storms, so the chemicals have better contact with the soil.
- 2). Apply a pre-emergent, broadleaf weed killer to the lawn, according to the package directions. These herbicides are rated for specific types of weeds, so your grass is not affected. Pay special attention to bare patches in the lawn.
- 3). Covering bare patches with a 2-inch layer of organic mulch keeps weed seeds down until you can spread grass seed in the spring.