Q: I have a sick 10- to 11-inch diameter maple tree (about 30 feet tall ... to southwest facing side of the stem. If it is a canker fungus, treatment options depend on the specific fungus involved.

Maple trees and canker Published: Aug. 14, 2007, 1:49 a.m. By bdegroff ...

There is no chemical treatment for cankers ... Although just about any tree or shrub can be affected, cankers have been commonly found on Freeman maple and other maples, arborvitae, boxwood ...

“My red maple has leaves that are ... dogwoods and elms are other commonly infected trees. On sycamores, the disease often infects branches, causing girdling cankers and dieback.

Anne Schmidt, OSU Extension Master Gardener Coral bark maple ... pictures of the tree and the open wound left by the broken branch. Is there any hope for the tree? What is the treatment for ...