Asked September 19, 2014, 9:11 PM EDT
Hanover County Virginia
Cankerworms have been a problem in spots around Virginia for the past several years. In most instances no control is needed unless the trees are severely or entirely defoliated for multiple years in a row.
Your orange powdery “hills” could be a couple of things – one possibility is some type of fungus infection; another possibility is infestation by some sort of wood boring insect (wood peckers can find these insects and do damage going after them under the bark).
I would suggest you arrange to have a certified arborist visit and evaluate your trees. They will charge a fee for the evaluation and they can give you recommendations for how to manage the problem. To find a certified arborist for your area, go to www.goodtreecare.com.