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Armyworms (Spodoptera spp.)
Armyworms are the larvae of several moth species and earn their name from the way they move in large groups across lawns and crops, devouring grass and plants in their path. They primarily target turfgrass, corn, and other grains, causing rapid brown patches that can devastate a lawn overnight. Early identification is critical, as large infestations can strip a yard bare within days. Timely insecticide treatments applied at first sign of damage provide effective protection.