Chemical and organic control of codling moth caterpillars

When possible, tolerate populations of codling moth caterpillars since they usually damage only a small amount of fruit.

Insecticides should be used only as a last resort. Before application, ensure plants are receiving the appropriate cultural care and take steps to protect natural predators. 

Chemical control of codling moth caterpillars on apples and pears is only effective before  they enter the fruit. Apply insecticide about the third week of June with a second application three weeks late. For more accurate timing, use a pheromone trap to monitor male codling moth populations, spraying when their numbers are highest.

Organic sprays containing natural pyrethrums can be used. These products have a short persistence so may need to be applied a number of times before the caterpillar population is under control. 

Contact (spray) insecticides, particularly synthetic pyrethroids such as lambda-cyhalothrin, deltamethrin, and cypermethrin, can be used to control codling moth caterpillars.

Follow instructions carefully when using insecticides. Plants in flower should not be sprayed due to the danger insecticides pose to bees and other pollinating insects. Insecticides can cause an outbreak of red spider mite since they often kill benefical insects that control mites.