Posted on Apr 27, 2016 by Kelly Estes

Black Cutworm Activity Increasing Across Illinois

*Edited April 28 to include significant flights and projected cutting dates for Carroll, Effingham, and Ford counties.

Black cutworms have been observed in traps across the state for the past couple of weeks. Several counties have reported significant moth flights (9 or more moths over a 2-night span). We can use the date of the significant flight to predict potential cutting dates based on degree day predictions.

For more complete information about the biology, life cycle, and management of black cutworms, a fact sheet is available from the Department of Crop Sciences, UIUC. Provided below is a brief overview of some key life cycle and management facts concerning black cutworms.

Weekly trap counts in their entirety can be found at the link below and are also shared weekly via Twitter (@ILPestSurvey) along with current pest alerts.

March 28- April 4

April 5 – April 11

April 12 – April 18

April 19 – April 25


The 2016 Illinois Pest Monitoring Network is part of the Area-wide Pest Monitoring Project that is supported by the National Institute of Food and Agriculture, U.S. Department of Agriculture, under award number 2014-70006-22557 and is made possible through a network of volunteer cooperators.

Kelly Estes, Illinois State Agricultural Survey Coordinator, Illinois Natural History Survey

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