My dwarf cherry tree is ill
My cherry has a beautiful canopy of leaves this year. With closer examination, the bark has whitish patches, I think it is leichen. At first I thought it was bird droppings but it’s not. In addition to that it has cracks and the sticky sap is leaking out in several places, another sign that it’s under stress. The tree is only about 5-6 years old. We treated it last year for powdery mildew. There is the start of a swelling low on the trunk, and what appear to be lesions or cankers. There is also a raised bark circle on the lower part of the trunk near ground level. Including pics below, sure wish they’d allow a few more pics. Please help!
Hennepin County Minnesota