Chemical control with herbicides is an important tool for managing weeds in home landscapes. Many of today’s herbicides are more selective and effective, making them less harmful to the environment when used properly. 

Broadleaf Weeds vs. Grassy Weeds

• Broadleaf weeds, like dandelions and clovers, have deep taproots and may have flowers.
• Grassy weeds, like crabgrass and goosegrass, have thick unsightly leaves and look more like grass.

Oftentimes weed controls target either broadleaf weeds OR grassy weeds, not both at the same time. Make sure to get a herbicide that controls the weeds that are specific to your lawn.

Pre-emergent vs. Post-emergent Herbicides: 

Weed controls either prevent weeds before they occur in your lawn (pre-emergents) or after they germinate (post-emergents). Some weed controls have both pre and post-emergent control ability.

• Pre-emergents form a barrier at, or just below, the surface of the soil in order to attack weed seeds as they germinate. 
• Post-emergents target only the weeds above ground to slow down their growth, eventually killing the weed, and ensuring that it will not grow back.

Use the navigation menu to learn more about controlling weeds and to view our Weed Control & Prevention Library for more in-depth information.