Tropical Sod Webworms In Lawns: Controlling Tropical Sod Webworm Invasions

By January 16, 2018Articles
By Mary H. Dyer, Master Naturalist and Master Gardener Tropical sod webworms in lawns do extensive damage in warm, tropical or sub-tropical climates. They usually don’t destroy turf unless infestations are severe, but even minor infestations can cause problems for lawns that are already stressed by hot, dry weather. Signs of Tropical Sod Webworms in Lawns The pests, which feed exclusively on grass, are the larvae of small moths that you may notice flying around your lawn when disturbed by walking, watering or mowing. The moths themselves don’t cause any problems, but they lay their eggs in the surface of the soil. It’s the larvae that eat the blades of grass and create tunnels in the thatch. The larvae overwinter in the thatch, then begin feeding on your lawn when the weather gets warm in spring. The pests multiply quickly, producing three or four generations in a season. The first

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