Do I have sod webworms?

General Symptoms of Sod Webworm Damage to Turfgrass One of the first signs of webworm infestation is small, ragged brown spots in the turf. Upon closer inspection, these areas will have a grazed or scalped appearance. As webworms continue growth and feed, the injured areas enlarge and coalesce.Click to see full answer. Similarly, how do I know if I have sod webworms? Symptoms of Sod Webworm Damage Small brown spots may appear in the grass, a little at first, and then as the season progresses with rising temperatures and drier conditions, grass growth slows and the brown spots become larger and intersect. This is an indication of possible sod webworm infestation. how do you prevent sod webworms? Prevent Sod Webworm Next Year Create Diversity. It is a good idea to encourage the many insects and animals living in your yard that normally prey on lawn pests. Get Rid Of Thatch. Sod webworms often infest lawns that have a serious thatch problem. Keep The Lawn Cool. Mow The Lawn Properly. Attract Beneficial Insects To The Yard. Feed Birds Year Round. Considering this, when should I treat my lawn for sod webworms? Synthetic pyrethroids are common products to use on sod webworms, and there are a few things to keep in mind when treating for these lawn pests. Apply the product late in the day, since these pests are active at night. Water your turf thoroughly a few days before application, which will help bring worms to the surface. Do sod webworms kill grass?Sod webworms are the larvae of lawn moths. They live in the root level of your lawn and munch up the grass leaves. They can kill an entire lawn in a matter of days. When the weather turns hot, patches of your grass may start to turn brown.