Proper mulching of trees
How to remove volcanoes from trees, especially when there is girding?
New London County Connecticut trees and shrubs
Thank you for your question. Unfortunately, I do not know what you mean about "volcanoes" on trees. Is this an insect you're referring to? The only reference I can find in any literature on this subject and trees is discussed here. If this doesn't answer your question, please write back or call your local Extension office at (860) 887-1608. Good luck!