Tree Spots - Ask Extension
We have an evergreen tree in our yard. It's a "mantis" style. Has developed some spores, or fungus, this year. See attached photos. Any idea...
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Tree Spots #869343
Asked May 20, 2024, 6:01 PM EDT
We have an evergreen tree in our yard. It's a "mantis" style. Has developed some spores, or fungus, this year. See attached photos. Any idea what they are? Thanks!
Clackamas County Oregon
Expert Response
Hello, those are lichens. The are not a problem and only live on the surface of the bark. They don't penetrate the bark and are not parasitic. I would not be concerned. The tree looks great. It is a type of Cedrus or true cedar. I'm not sure the species, but it may be a Blue Atlas Cedar.
Here is a great book on lichens if you are interested:
https://osupress.oregonstate.edu/book/macrolichens-of-pacific-northwest
Here is a great book on lichens if you are interested:
https://osupress.oregonstate.edu/book/macrolichens-of-pacific-northwest
