blue gray fungus? on trees
I don't know what the stuff is called, but it's commonly found on many trees around my house. It's sort of blue gray and flaky and covers the bark of trees.
The thing is, it's all over half of the branches on one azalea, and though the bush is growing, it looks terrible. Now I'm finding it on another one. I needed to trim the one shrub anyway, and cut most of those branches off, but I'd like to know if I can spray something to get rid of the stuff.
Anyone know what I'm talking about? what it is? how to get rid of it?