I can’t say I’ve ever paid too much attention to lichen in my life or thought about it ever, but after visiting the Join the Enlichenment exhibit at the Santa Barbara Botanic Garden, lichen has been ...

Lichens, which consist of a fungus and an algae or cyanobacteria growing together, are a common sight on tree trunks and other outdoor surfaces. Far from being harmful, they have a number of practical ...

My tree has lost all its leaves and the bark now has some fungi growing on it? Is lichen killing my tree? Lichen (pronounced lie-ken) gets a bad rap based on its appearance alone. It has been on our ...

Q: A fungus-like growth is all over trees in the neighborhood. It’s a pastel blue-gray-green color, sometimes flat and sometimes frilly, and it coats much of the bark on some trunks. I worry urban ...

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" ...

Question: Please help! I just noticed that my wild plum tree in my backyard has some sort of fungus growing on it. Is there anything I can do, or is it diseased beyond repair? It was healthy this ...

When people notice lichens on their trees, shrubs and other plants, they become concerned that they have problems. But they shouldn’t worry, says LSU AgCenter plant scientist Raj Singh. “Lichens are ...

Last Saturday, we had our first snowfall signaling the arrival of winter and the end of the growing season. However, winter is the time when lichens really strut their stuff. Margaret Roach wrote in ...

Q: The pictures are of a ginkgo tree that is completely covered with this fungus. It was also on our Encore azaleas and some older oak trees and other shrubs. We lost all our azaleas, some other ...

Answer: That orange growth is lichen, not a rust pathogen. Lichen do not harm the tree or shrub in any way. They tend to grow only on that outer bark and stay there, not growing deeper into live ...

Oak wilt is a fungal disease that kills oak trees, spreading through the roots of the interconnected trees. We are about to enter the prime susceptibility time of year (Feb. 1 through June 30), so ...