Answer: It looks like your tree has several different types of Lichen growing on it. There are at least 13,000-17,000 species of lichen living throughout the world. When identifying lichen, we ...

The presence of lichen or moss on backyard trees can understandably be concerning at first. Lichen is a combination of algae and fungus that lives on any number of solid, undisturbed surfaces, ...

I know many of us want winter to come to an end, but I would like just one more good snowstorm. I love all seasons, but I need a little more of that winter bleakness in the woods, primarily to help me ...

A fun, easy-to-use tree identification booklet is available from the nonprofit Arbor Day Foundation. The booklet — "What Tree Is That?" — helps people identify trees in a simple, step-by-step process.

Dawn Brennan inspects the bark of a tree covered in several different lichens during a Lichen in the Winter World walk held by the Glacier Institute around Apgar in Glacier National Park on Saturday, ...

Lichen is everywhere. It grows on sidewalks, rocks, trees, roofs and in frigid tundras, arid deserts and even contaminated environments. You just have to look for it, says lichenologist and Eastern ...