Laurel: Carnation tortrix
Photo by: A.L. Antonelli
Biology
Portuguese laurel (Prunus lusitanica) is sometimes infested with the larvae of the carnation tortrix, a small bell-shaped brown moth with reddish underwings and dark bands on the upper wings.
The larvae feed by rolling leaves and tying them with webbing. The caterpillars are light brown or greenish with brown heads and about 1/2″ to 3/8″ long at maturity. The larvae are very active when disturbed.
The carnation tortrix attacks many broad-leaved evergreen plants but seldom causes serious damage.
Management Options
See "Using Integrated Pest Management (IPM) in the Landscape" for successful problem management techniques.
Non-chemical Management
Select non-chemical management options as your first choice!
- Hand-pick and destroy rolled leaves, or pinch to kill caterpillars inside.
- Provide proper culture. Healthy plants can easily tolerate some defoliation.
Chemical Management
IMPORTANT: Always read and follow label directions when working with pesticides.
For more information on using pesticides visit :
- Apply when first noticed.
- Use a spreader-sticker with liquid Bt formulations.
- Use products according to label instructions.
- Homeowners should not make foliar applications to trees over 10 ft tall.
- Consult a commercial pesticide applicator for treatment of trees and shrubs over 10 ft. tall.
Approved Pesticides
If you choose to use a pesticide, some examples of products that are legal in Washington are listed below. Some products are labeled for just INDOOR or just OUTDOOR use, or may allow both uses. Be sure to choose a product appropriate for your situation. Always read and follow all label directions.
WSU Extension programs and employment are available to all without discrimination.
Evidence of noncompliance may be reported through your local Extension office.