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Fir tree fungus #926807

Asked March 26, 2026, 11:52 AM EDT

Does my for tree have a fungus? How can I treat it?

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


An Ask Extension Expert Replied March 26, 2026, 3:46 PM EDT

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