One of my trees has, I think, bag worms. It has web like places on several branches and tiny black spots on the leaves. I had them cut off. Is there something I should spray on the rest of the tree to prevent this from spreading?
Campbell County Kentucky
At this time of year I'm thinking you are referring to fall web worms. These worms build a cluster at the ends of branches. Since they attack only in the fall of the year
chemical control is not warranted. I would do as you have done and cut the web out
and destroy. Be sure to make a clean cut. The leaves on your tree have accomplished much of what they needed to do by now. I would not worry about the
spots on the floiage.