Weed prevention and control is science and not a broad-stroke application. Identifying weeds in your lawn is our first step. We then apply the most effective herbicide to eliminate existing weeds and prevent future growth.

To prevent weeds from forming, THL Blue will apply a pre-emergent solution in the fall and spring to stop late-winter and early summer weeds from growing. We will also apply a post-emergent for existing weeds. Depending on the type of weed, multiple applications may be necessary until your lawn is weed-free.

A pre-emergent herbicide prevents most weeds from emerging. Annual weeds that appear after the winter and summer can be greatly medicated by using a pre-emergent. Fall and spring applications of a pre-emergent attack the seeds during the germination process, and block weeds from producing the proteins needed for growth. The process is called mitosis.

In short, pre-emergents do not prevent seeds from germinating, but rather damages root development causing the weed to die from its inability to properly find and/or process nutrients.

A post-emergent herbicide kills weeds that have emerged from seeding and entered the plant phase. There are four types of post-emergents.