Winter Moth

Disease

Winter Moth

Operophtera brumata

insect

In a Nutshell

    Holes in the leaf tissuesSkeletonized leavesLight green caterpillars

Hosts: %1$s

· Apple · Pear · Quince · Blueberry · Cherry · Currant

Symptoms

The caterpillars of Winter Moths eat the buds of fruit trees and in the course of the year go on eating flowers and leaves, leaving small holes in the leaf tissue. In case of heavy infestation, the caterpillars leave only the leaf veins and stalks untouched. The caterpillars are light green and have a very characteristic way of moving: they can arch their whole body by using body tension.

Trigger

The wingless females climb up tree trunks in autumn and lay their eggs. In spring and early summer, you can find the caterpillars.

Biological Control

In autumn, you can equip endangered groves with a glue ring. They have to be attached firmly to the trunk and supporting stakes if necessary. This stops the females on their journey from the soil to the crown. You should control the glue rings regularly and replace them when they become dirty or dry. In any case, replace the glue ring in the beginning of spring.

Chemical Control

Insecticides containing bacillus thuringiensis can be used to control Winter Moth. Avoid insecticides containing Acephate, Malathion, Carbaryl Bifenthrin, Cyfluthrin, Fluvalinate, and Permethrin.

Preventive Measures

    Equip your trees with glue rings




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