This richly illustrated manual for tree inspection describes the typical damage symptoms and abnormalities for the 15 most common tree species found along streets as well as in parks and gardens. Experience in the care of urban trees has shown that diseases, damage symptoms, and abnormalities can vary significantly depending on the tree species. This poses a particular challenge for tree inspection in municipalities. Therefore, the authors systematically compile the necessary knowledge for tree inspection in this book, organized by tree species. This species-specific approach has proven effective in practice. Since the first edition in 2005, new diseases have emerged in various tree species, such as ash dieback and the horse chestnut bleeding canker caused by Pseudomonas.