This guide presents information on controlling insect pests of ornamental trees and shrubs. It is organized for easy reference by nurserymen, arborists, and others desirous of controlling insect damage. General information given includes notes on spraying and sprayers, insecticides, general purpose sprays, phytotoxicity, and health precautions. Common insect pests of ornamentals are described and control methods suggested. There is a listing of ornamentals common to the Indiana, Illinois, Kentucky, and Ohio area, along with their most frequent insect pests. A spray schedule is given and a dilution and conversion table included. (MA)