Sod Webworm larvae overwinter in underground tunnels beneath your lawn. These small larvae are approximately 1/2? long and blend in very well with your lawn. When the overwintering larvae get to late spring, they pupate and then the adult moths emerge 10-14 days later, typically in June. Adult moths can be recognized as they dart in a zigzag pattern over the grass. After mating, female moths can lay up to 200 eggs, which will hatch into young larvae, ready to feed on your lawn in as little as 7 days.
Sod Webworm larvae will feed on your lawn from June through September. The multiple generations of this insect can cause substantial damage to your lawn. This damage is often observed as brown patches up to the size of a fist in your lawn. This damage typically goes unnoticed if the lawn is already browning due to drought stress. Larvae will chew off grass blades just above the base of the plant and these spots will enlarge and join with one another.
Another sign of larvae feeding is finding green fecal pellets in the thatch layer, but these are even harder to find because of their small size! Finding these larvae takes some good eyes, and being down on your hands and knees, inspecting the thatch layer. If more than 6 larvae are found in a square foot, you have a major problem on your hands.
Getting rid of Sod Webworms is fairly easy. A granular or liquid insecticide labeled for their control will give your lawn about 30 days of relief from these pests. However, it will only control actively feeding larvae, if the material comes in contact with them. Granular products need to be watered in to start working, but are very effective in killing lawn insects as it is absorbed into the grass plant’s tissues they are feeding on.
Shop for products that offer a money back guarantee on your purchase, so if it doesn’t perform as promised the company will refund your purchase price. Remember, always hold onto your receipts for almost all purchases it is the best way to either return and item or supply proof of buy on a product that didn’t live up to its promises.
Thanks to Tomlinson Bomberger for this informative article you can visit his site and see more helpful tips and articles.