Knowledgebase
Fir tree fungus #926807
Asked March 26, 2026, 11:52 AM EDT
Scott County Minnesota
Expert Response
Thank you for your question and photo for Extension Master Gardeners. What you are seeing on your tree bark is lichen, a non-harmful fungus. You will not need to treat it or get rid of it as it won't hurt your tree. In fact, it shows your tree is growing in a clean and healthy environment. Here is more information from Extension about lichens:
Non harmful tree conditions | UMN Extension