What Is Green Moss on Tree Trunks

Those green-blue growths that you see on tree trunks and branches are not mosses. They are lichens. Lichens are not killing your tree, nor are they causing it to fail. They are telling you something about your tree’s health, though.

Is green moss on trees bad?

While green moss on trees isn’t necessarily harmful, it can contribute to a myriad of potential problems. Thick moss growth on trees is heavy and can throw trees off balance. This may make for dangerous conditions during windy storms and other inclement weather.

Is moss growing on tree trunks bad?

Algae, moss and lichens aren’t harmful to trees, so don’t fret if you spot any of their green growth. They’re all-natural organisms, that are not actually fungi, that crop up on trees and lots of other plants.