University of Minnesota Extension
 Menu  Menu

Extension > Garden > Diagnose a problem > What insect is this? > Garden Pests > Caterpillars, maggots, grubs, and similar immature insects - 1/4 inch - 1/2 inch long > Diamondback moths

Print Email Share

Diamondback moths

Plutella xylostella

Diamondback moths

Alton N. Sparks, Jr., University of Georgia,

Size: Up to 1/3 inch long

Where/When: The larva prefers cole crops, such as cabbage, cauliflower, broccoli, kale, rutabaga, radishes, turnips, collards, horseradish, and other crucifers. The larva is active from late May or June until the end of the growing season with numbers decreasing after Spring.

Significance: Damage may result in stunted growth; reduced yield; death of young seedlings; and malformation of cabbage, broccoli or cauliflower.

More information on Diamondback moths...

Did this tool help you identify the insect? Tell us.
  • © Regents of the University of Minnesota. All rights reserved.
  • The University of Minnesota is an equal opportunity educator and employer. Privacy