Those green-blue growths that you see on tree trunks and branches are not mosses. They are lichens. Lichens are not killing your tree, nor are they causing it to fail. They are telling you something ...

My mom loves to hike. Me? Not so much. While she reaches a sort of hiker’s high, I remain painfully aware of every step and how many things I’m allergic to in the forest (ahem—maple trees, moss, mold, ...