Black bugs on cherry tree leaves
I just today noticed that a lot of my cherry tree leaves have colonies of black bugs on them, especially on the undersides. They're not on the cherries, just the leaves. They're about as big as the head of a pin, and they don't move around a lot. But there are a lot of them.
This can't be good.
I'll see if I can't get a decent picture and upload it, but does this ring any bells with anyone? And what do I do to get rid of them that won't poison the cherries I want to put in my mouth?