A lawn weed killer is a pesticide used to control unwanted plants in lawns. It is typically applied in the spring or fall when weeds are actively growing. The best lawn weed killer will effectively kill weeds without damaging the grass. There are many different types of lawn weed killers available, so it is important to choose one that is right for your specific needs.
Lawn weed killers can be classified into two main types: pre-emergent and post-emergent. Pre-emergent herbicides are applied before weeds have emerged from the soil, and they work by preventing weed seeds from germinating. Post-emergent herbicides are applied after weeds have emerged, and they work by killing the weeds directly. There are also selective and non-selective herbicides, selective herbicides target specific types of weeds, while non-selective herbicides kill all plants they come into contact with.