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