Q: There is green moss growing on my older flowering cherry tree. Will it hurt it and how do I get rid of it?
Commonly this is seen on older deciduous trees and the good news is
that it is harmless. What you see is moss and lichens (gray) that have
found a home on your cherry. There are 2 options for you to get rid of
it. First, you could get a stiff brush and brush it off (if the tree is
not too tall) or your second option is to spray with copper sulfate
while the tree is dormant. Ive also seen people use a garden hose to
blow off the moss. Another option is to just leave it be and think of it
as adding character.