Cytospora Canker of Stone Fruits

Cytospora canker is one of the most destructive diseases of peaches, nectarines, apricots, sweet cherries, and plums in Pennsylvania. Also known as perennial canker, peach canker, Valsa canker, and Leucostoma canker, the disease can cause trees in young orchards to die. Infected trees in older orchards gradually lose productivity and slowly decline.