That painted tree with a white trunk has a secret meaning. Find out why gardeners and farmers do it, and how it helps protect ...

Whether you're walking along a city sidewalk or hiking deep in the forest, you might occasionally notice paint marks on tree trunks (or even a metal band once in a while). Those paint marks are codes ...

If you see green paint on a tree, it won't be by accident. It was painted on for a reason; why it was will largely depend on ...