University of Idaho - I Banner
students walk on University of Idaho campus

Visit U of I

Learn about the many reasons the University of Idaho could be a perfect fit for you. Schedule Your Visit

Parents on campus during orientation

Homecoming Oct. 14 - 21

Join other Vandal families for a week of celebration and Vandal traditions. View Calendar

campus full of students

U of I Retirees Association

UIRA has a membership of nearly 500 from every part of the University. Learn More

Cutworms

Order: Lepidoptera
Family: Noctuidae
Species:
Redbacked cutworm (Euxoa ochrogaster)
Spotted cutworm (Amathes c-nigrum)
Variegated cutworm (Peridroma saucia)

Pests as larva

Appearance

Adult

  • Dark, drab moths
  • 1-2 inch wing span

Larvae

  • Smooth-skinned, greasy gray-brown with darker longitudinal lines and spots
  • Up to 1 1/2-inches long
  • Curls into a "C" when disturbed

Host plants

  • Garden flowers, vegetables, berries and fruit

Symptoms

  • Surface cutworms: sever tender seedlings at soil surface
  • Climbing cutworms: defoliation that occurs at night with the worst damage in the spring

Biology

  • Eggs and larvae overwinter on garden trash and weedy grasses
  • Several generations per year

Control Options

Physical

  • Hand pick at night with a flashlight (hide during the day)
  • Larval habitat traps
  • Transplant collars and hot caps

Cultural

  • Destroy overwintering sites via cultivation, composting and weeding

Biocontrol

  • Conserve native predatory and parasitic insects

Pesticides

Contact Us

Integrated Pest Management

Mailing Address:
University of Idaho, Boise Center
322 E Front St, Suite 180
Boise, ID 83702

Phone: 208-364-4046

Fax: 208-364-4035

Email: rhirnyck@uidaho.edu