In late summer and early fall, the moths return to the plains to lay their eggs in wheat fields and other cultivated areas. With sufficient moisture, eggs hatch and larvae of the next generation start feeding as weather conditions permit. Army cutworms have a wide host range and feed on most Crops grown in Colorado. They feed on just about any green tissue presented to them, although they will show preferences when given a choice. For example, army cutworms have been observed to prefer broadleaf weeds in wheat fields over wheat.
Army cutworm is found throughout the western states.
Most outbreaks occur in the Great Plains and Rocky Mountain regions of the United States and southern Canada. Army cutworm is found in all agricultural areas of Colorado, although it is mostly a pest of winter grains, sugarbeets and alfalfa. Scouting and Treatment. Monitor wheat fields periodically during late winter and early spring. Army cutworm is a foliage feeder but usually hides during the day.