Is it worth spraying weeds in the fall?

Spraying weeds in the fall is one of the most effective strategies for achieving a cleaner lawn the following spring. In fall, many perennial weeds move nutrients and energy down into their roots, which also carries systemic herbicides deeper into the plant. This leads to better root kill and longer-lasting control than many spring applications. Fall weed control also reduces the number of winter annuals and early-spring eyesores, making it easier for your grass to green up and spread. When combined with fall fertilization, a professional weed spray program sets Oklahoma lawns up for thicker, healthier growth and fewer weeds the next year.