Sod Webworm control focuses directly on the larvae, as the larvae can be found feeding on the thatch layer of turf. They prefer sunny, dry locations with very little shade. When trying to identify, it is best to look around the dead patches of grass for green fecal pellets and plant debris/soil particles becoming entwined together with webs.
Lifecycle and appearance
Sod Webworms emerge from the soil in mid-late spring to lay eggs. Eggs hatch about a week later and larvae begin feeding on turf. The complete cycle from larvae to adult takes six to ten weeks, depending on environmental conditions and they may produce multiple generations per season. The last generation overwinters in tunnels in the soil.
Usually first found in spring, where you’ll notice the top grass of growth removed and thin patches of grass left behind. Then in summer, you’ll find larger areas of brown, dead grass. Can be easily mistaken with summer dormancy.
How to get rid of Sod Webworm
Koppert offers different solutions for biological pest control of Sod Webworm.