Shade Tree Anthracnose (PPFS-OR-W-23)
Anthracnose is the common name given to several fungal shade tree diseases with similar dark, irregularly-shaped leaf lesions. While they are primarily foliar diseases, damage on some hosts may extend to twigs, branches, and buds. Resulting defoliation and dieback, especially if it occurs year after year, can weaken trees and make them more susceptible to environmental stresses and secondary pathogens.
A newly revised publication (formerly, Anthracnose Diseases of Shade Trees, PPA-17) discusses anthracnose on shade tree hosts most commonly affected in Kentucky: ash, maple, oak, and sycamore.
Shade Tree Anthracnose (PPFS-OR-W-23) is available online.
For additional publications on woody ornamental diseases, visit the UK Plant Pathology Extension Publications webpage.
By Nicole Ward Gauthier, Extension Plant Pathologist