First published in 1987, Diseases of Trees and Shrubs has become a standard reference for plant health specialists, plant diagnosticians, horticulturists, arborists, foresters, and their students. Now thoroughly revised, fully updated, and illustrated with more than 2200 digitally optimized color images in 261 full-color plates and more than 350 black-and-white photographs and drawings, the second edition is an unrivalled survey of the diseases of forest and shade trees and woody ornamental plants in the United States and Canada. The book is both an authoritative reference book and a powerful diagnostic tool. Organized according to type of disease-inducing agent, the second edition is also designed to be helpful in classroom and field instruction. Symptoms, signs, and cycles of hundreds of diseases are described and microscopic features of many pathogens are depicted in photos and line drawings. This remarkable scholarly work--praised as one of the best horticultural books of the twentieth century--lays claim to the same accolade for the twenty-first century.