Sooty Mold on Elm

Question

Please tell me how to get rid of it on my tree. It appears to be on the trunk in one visible patch about a foot long and approximately six feet off the ground.

Answer 1

It is probably not sooty mold, but rather sooty canker. This article will help:
https://www.gardeningknowhow.com/ornamental/trees/tgen/tree-disease-identification-sooty-canker-fungus.htm