I have had more inquiries this spring than in the past several years regarding brown and gray moths flying around lights at night or being flushed from weedy areas in fields. There are dozens of species of moths that occur in Iowa in the spring, but only a few are potential pests. The eight most common moths collected during mid-May in a light trap in Ames were armyworm, black cutworm, celery looper, spotted cutworm, and variegated cutworm. All of these moths have multiple generations in the Midwest, so it is possible to see them again in mid- or late summer.
Iowa State University
Rice, Marlin E., "Many moths fly in spring" (2001). Integrated Crop Management News. 1855.
The Iowa State University Digital Repository provides access to Integrated Crop Management News for historical purposes only. Users are hereby notified that the content may be inaccurate, out of date, incomplete and/or may not meet the needs and requirements of the user. Users should make their own assessment of the information and whether it is suitable for their intended purpose. For current information on integrated crop management from Iowa State University Extension and Outreach, please visit https://crops.extension.iastate.edu/.