Q: There are greenish-gray patches all over the trees in our woods. I’ve heard people talk about lichen and moss killing trees and many of our trees do not look healthy. Do I need to be worried? - ...

Q. I notice many of my pine trees have lots of bright green-gray things growing on the trunks. Is it a virus? What is this? Is it harming my trees? What can I do to reduce or eliminate it? A. I am ...

Algae, lichens and moss often form green or grey, powdery or mossy, crusty growths on the stems, branches and trunks of trees and shrubs. Pictured here, lichen and moss. This dreary "gray all day" ...

Now that deciduous trees are bare, trunks and branches have taken center stage, and you might be noticing nuances and irregularities that evaded your attention over the summer. For instance, what are ...

Lichens and mosses live everywhere they can! They prefer moist areas, and happily live in aquatic and marine environments. By the ocean, lichen forms vivid orange streaks on sea-side rocks. In ...

Now that deciduous trees are bare, trunks and branches have taken center stage, and you might be noticing nuances and irregularities that evaded your attention over the summer. For instance, what are ...

You are able to gift 5 more articles this month. Anyone can access the link you share with no account required. Learn more. Once I got the last of the garden leeks harvested, I started paying ...