How to Manage Pests

Pests in Gardens and Landscapes

Imported cabbageworm—Pieris rapae

Cabbageworm larvae are green and very hairy, with an almost velvetlike appearance. Older larvae may be up to 1-inch long and often have one faint yellow orange stripe down their backs and broken stripes along the sides. Adults are white with one to four black spots on the wings.

Life cycle

Damage

Cabbageworm larvae chew large, irregular holes in leaves, bore into heads, and drop greenish brown fecal pellets onto edible portions.

Solutions

Handpick. Natural control by virus and parasites, such as tachinid flies, can sometimes be effective. Bacillus thuringiensis or spinosad are very effective. Egg laying can be prevented by using floating row covers.

Imported cabbageworm larva
Imported cabbageworm larva

Pupa with tachinid fly exit holesPupa with tachinid fly exit holes


Statewide IPM Program, Agriculture and Natural Resources, University of California
All contents copyright © 2014 The Regents of the University of California. All rights reserved.

For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See our Home page, or in the U.S., contact your local Cooperative Extension office for assistance.

Agriculture and Natural Resources, University of California

Accessibility   /PMG/GARDEN/VEGES/PESTS/importcabwrm.html revised: April 25, 2014. Contact webmaster.