How do you prevent winter moths on fruit trees?
Posted by Dobies Staff on 17 November 2014 02:55 pm

The adults of the three species known as winter moths attack Apples, Pears, Plums and Cherries. The adult moths emerge from pupae in the soil from October through to April. The flightless females mate with winged males and then crawl up the tree trunk to lay about 200 eggs, which hatch from March onwards. The caterpillars feed on leaves, often when in tight bud and flowers until mid May or early June. They move down to the soil to pupate and can often be seen hanging on a silk thread. There is only a single generation in a year and the pupae stay in the soil until early winter or spring.

Tightly placing a grease or Glue Band around the tree trunk, after removing loose or rough bark to prevent the moths crawling under them, will trap migrating females. Newly hatched caterpillars can be controlled with a suitable insecticide as the leaf buds start to break.


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