FAQ

One of our Valley Oak trees has a web-like coating on its limbs, starting at the trunk and going up several branches. It has been there for about two weeks and is starting to lessen. What could it be, and is it harmful to the tree?

This is likely an insect called a leafroller that created the webbing. If this is the case, it has probably completed it's life cycle. If you see this next year, you can treat with insecticides, including organic products, such as insecticidal soap. You can also click here to have one of our arborists come out and take a look.