Shot hole disease

Shot hole disease, fungus found in the leaves of fruit trees (stone fruits).

Also known as:
Coryneum blight

recognize Shot hole disease of cherry trees
Shot hole disease, photo: Kühler Grill - Public Domain

Shot hole disease (Stigmina carpophila synonym Wilsonomyces carpophilus). This fungus in the leaves of fruit trees (stone fruit) grows in the spaces between the leaf cells. The cells are affected and die, resulting in holes in the leaves. This fungus spreads during wet periods.

Where to find

  • Stone fruits:
    • Cherry Tree
    • Plum Tree

Control

Remove affected parts and fallen affected leaves.

Prevention

Prevent Shot hole disease by proper drainage and fertilization. Make sure the wind has easy access to the tree by pruning regularly.