How to Spot Lawn Pests in Your Grass

Fall armyworms are surface feeders. They may hide in the heat of the day, however they live above ground and eat the grass blades. You will not need to dig in the soil to find them. Fall armyworms are small and green with a black head when they hatch, but they grow quickly and become darker with age.

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See picture 2. Examine the turfgrass health and vigor, the size of the caterpillars, the quantity of feeding damage, and the time till expected frost when figuring out if insecticide treatment is warranted. Carefully scout to identify the number, size, and distribution of fall armyworms and the condition of the turfgrass. Small armyworms (greenish in color) are much simpler to control than caterpillars nearing their mature length of 1.5 to 2 inches.

Healthy turfgrass might endure low to moderate amounts of damage and can recuperate with watering and fertilization. See Healing listed below. Cut tall turfgrass before treatment to enhance insecticide coverage. Gather the clippings that accumulate on the surface area. Water gently numerous hours before treatment to increase larval activity on the soil surface.

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See Table 1. Pyrethroid resistance has actually been reported in other parts of the country. If there is no fast control of fall armyworms after applying a pyrethroid, consider using a various class of insecticide, or hire a yard care business to use a chlorantraniliprole or tetraniliprole compound. Azadirachtin insecticides (Neem oil) can provide control of small larvae and are licensed organic.