University of Minnesota Extension
Menu Menu

Extension > Garden > Diagnose a problem > What insect is this? > Garden Pests > Flies, moths, wasps,and other insects with obvious wings - Under 1/4 inch long > Cabbage maggot

Cabbage Maggot
Photo Credit: Jeff Hahn, Univ. of Minnesota

Cabbage maggot
Delia radicum
Size: ¼ inch long (Note: There are other flies that are similar in appearance that are not necessarily pests in your garden. Have flies identified to determine their pest status if it is not clear what they are.)

Where/When: The female lays eggs at the base of crucifer plants, including broccoli, radishes, cabbage, cauliflower, and turnips and in nearby cracks in the soil. Active April and May.

Significance: The larva causes damage by feeding on the roots of plants. Infested plants can appear discolored, wilted, or stunted and damage may kill young plants.
Give us your feedback
  • © 2015 Regents of the University of Minnesota. All rights reserved.
  • The University of Minnesota is an equal opportunity educator and employer. Privacy