Paint marks on a tree aren't always random. Here are what the different colors may mean and why it is important to know what they are.
Powdery mildew on Tatarian maple leaves. Photo courtesy Getty Images. Welcome to our tree column, “Ask your local arborist.” Each month, arborists from the Davey Tree Expert Company in Menlo Park ...
Seeing blue dots, red Xs, orange circles and purple bands on trees and wondering what they mean? Here's what we found out about those painted trees.