Black Knot (PPFS-FR-T-04)
Black knot disease is aptly named for the conspicuous black knotty growths that form on infected branches. This is a common, often serious, disease of plums and cherries in Kentucky. Ornamental Prunus species, as well as wild plums and cherries, may also be affected. The Plant Pathology fact sheet on black knot has been recently revised and updated; symptoms, cause, disease development, and management options are discussed.
Black Knot (PPFS-FR-T-04) is available online.
For additional publications on fruit diseases, visit the UK Plant Pathology Extension Publications webpage.
By Nicole Ward Gauthier, Extension Plant Pathologist