Producers must be aware of the characteristics and limitations of the insecticide used to time sprays so a continuous insecticidal barrier to larvae entrance to the bark is in place. Seasonal histories of peachtree borers vary considerably. Timing of initial sprays will vary by several weeks over the diverse habitats and environmental conditions present in western Colorado. Given these limitations, several insecticides are effective in controlling peachtree borer. They are applied as a drenching spray aimed at the base of the trees.
Timing is based on adult moth emergence, which is determined by pheromone captures.
Pheromone captures for the Grand Junction area are discussed in the next section. Choice of the proper insecticide is dependent on tree species, number of trees to be treated, application equipment and other variables. For commercial growers, the most effective compounds are restricted use. Homeowners have choices with the active ingredients of esfenvalerate, permethrin, diazinon, endosulfan, lindane and others. Always read and follow all label directions.