How-To Features Tree Registry Register your trees for customized advice. Custom Care Kits Different trees have different needs. Infested fruits also are prone to spoilage.
Apple maggots spend the winter in the pupal stage around the base of apple trees.
The adult flies emerge in midsummer, typically between mid-July and early August, and lay eggs on the fruit. There is only one generation per year. These traps are useful for timing sprays to control the insect, with sprays timed to coincide with periods when the flies are being captured. Furthermore, the use of several red sticky spheres per tree also can provide substantial control of this insect by killing adult females before they lay all their eggs.