Repairing tree damage

Question

I have a large (18-20′) red leaf maple in my yard. While removing the ivy that was growing up it (done as needed) I discovered a large “wound” that had significant decay (like a dead tree on the ground) with slugs and insects under the dead bark. Most does not go very deep but some is as much as 1 inch into the tree.

How do I treat this to keep the tree alive? Or should I have it cut down before it falls on the house?

Answer 1

You may have canker damage. I've attached links to articles about bark disease and repairing damaged bark. If this is close enough to be a concern for your house, then you should have this checked out immediately. Your local extension service will direct you to the closest source.

https://www.gardeningknowhow.com/extension-search

https://www.gardeningknowhow.com/ornamental/trees/maple/maple-tree-bark-disease.htm

https://www.gardeningknowhow.com/ornamental/trees/tgen/repairing-tree-bark-damage.htm