Q: Bill, on the bark of my Crepe Myrtles, I noticed grayish growth. I can peel this growth off fairly easily. What is this growth and is it hurting my tree? A: It sounds like you have lichens. Lichens ...

Elizabeth has worked since 2010 as a writer and consultant covering gardening, permaculture, and sustainable living. She has also written a number of books and e-books on gardens and gardening. Haley ...

Lichens are composite organisms that are formed as a result of the association of one or two races of fungi (ascomycetes or basidiomycetes) and algae whether green algae or blue green algae ...