What is happening to my Arbutus Unedo (strawberry trees)? Are they save-able? What do I do? Planted in Duncan, BC about 3/12 years ago. They developed these spots and dying leaves in their second year and it seems to be getting worse.
Ruptoseptoria unedonis (formerly Mycosphaerella arbuticola), has been found by the OSU Plant Clinic. This fungus also causes a leaf spot on the related strawberry tree (Arbutus unedo) Madrone (Arbutus menziesii)-Leaf Spots and Blights | Pacific Northwest Pest Management Handbooks (pnwhandbooks.org)