Codling Moth

Codling moth, Cydia pomonella, was introduced from Europe in colonial times and now occurs throughout North America as well as most of the world, wherever apples are grown. In the past in Pennsylvania, the codling moth was maintained at low population levels by insecticides sprayed to control other pests and usually did not seriously affect apple production in commercial orchards. However, during last few years the significance of this pest drastically changed and numerous orchards have experienced increased pressure from this pest. Codling moth has been known to infest 95 percent of the apples in an orchard when control measures were not taken against it. Given this insect's ability to adapt to various fruits (i.e., the ability to coincide with different fruiting times) and to develop resistance to insecticides, fruit growers must continually be on guard against a resurgence of codling moth.

For more information, please see this Penn State Tree Fruit Prodction Guide Web page.

Penn State Horticulture Department

For more information on this subject, Please visit the College of Agricultural Sciences Publications Web site.

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