Weeds are more than an eyesore; they are an infestation that can take over your yard if not dealt with swiftly. In the spring, preventive weed control treatments are applied, preventing new weeds from sprouting. Tough weeds rooted in your lawn may need to be pulled, and a post-emergent treatment used to keep the weeds from spreading. Fall is another season where weed control is essential. Weeds can survive the winter and sprout again in the spring. So it’s crucial to eliminate new weeds before your lawn freezes over.