Insect and Mite Pests
The green peach aphid, Myzus persicae, is a common pest of peaches in Pennsylvania. Peach trees are its primary host and overwintering source.
The Japanese beetle, Popillia japonica, is one of the most common pests encountered by Pennsylvania fruit growers, nursery operators, and gardeners. It is often the most important pest of tree-ripened peaches and can cause severe damage to other important crops.
Lesser peachtree borer, Synanthedon pictipes, is an important pest in peach and cherry orchards throughout Pennsylvania and surrounding states. Problems are almost always associated with widespread incidence of Cytospora canker and, to a much lesser extent, pruning wounds, winter injury, and mechanical damage.
The oriental fruit moth (OFM), Grapholita molesta, is a pest of most stone and pome fruits. On pome fruits, its appearance and injury is similar to that of the codling moth.
The peachtree borer, Synanthedon exitiosa, is a pest primarily of peach and nectarine trees, but it also attacks apricot, cherry, and plum trees.
The plant bugs and stink bugs that attack peaches, nectarines, apples, and pears feed on many different wild and cultivated plants, including numerous other horticultural and agronomic crops. They are found in significant numbers throughout Pennsylvania.
The two-spotted spider mite, Tetranychus urticae, a pest of apple, peach, and other fruit trees, also feeds on a wide range of both wild and cultivated plants.