Fall armyworm injury to whorl-stage corn. Armyworm injury to a cornfield. Corn earworm Large holes in whorl leaves . Larvae feed deep inside the whorls, especially on very late-planted corn in the upper Midwest. Holes may be 1 or 2 inches across and often mirror each other on opposite leaves that have emerged from the whorl.
Injury resembles fall armyworm injury.
Corn earworms are striped with an orange-freckled head. Corn earworms are multi-colored and may be green, red, or brown with shades of lighter stripes. Corn earworm whorl-feeding injury. Fall armyworm Large holes in whorl leaves . Larvae feed deep inside the whorls, especially on very late-planted corn in the upper Midwest.