winter cutworms

Asked April 14, 2019, 5:16 PM EDT

Help My daughters flowerbeds are being decimated again by winter cutworms. do these worms live in soil and/or sod? Are they spread by moths? When do they emerge? How do we get rid of them?

Multnomah County Oregon cutworms

1 Response

Thank you for your question. Cutworms are the larval stage of the yellow underwing moth (Noctua pronuba), so they are like the caterpillar to the butterfly. Moths don't 'spread' them; the cutworm becomes a moth through photosynthesis. Moths just aren't as interesting, because they don't have flashy chrysalises. Here is a comprehensive OSU article about them, their identification and control: https://catalog.extension.oregonstate.edu/sites/catalog/files/project/pdf/em9139_1.pdf

Good luck!