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Clark Tree Fungus #764777

Asked July 30, 2021, 11:33 AM EDT

Can you please identify the attached fungus on most of my trees, and advise how I can kill this infestation. Billy Clark

Harris County Texas

Expert Response

You have lichen growing on the tree and it will not negatively affect the tree. Here are some additional resources.

https://edis.ifas.ufl.edu/publication/ep485

https://extension.umn.edu/trees-and-shrubs/non-harmful-tree-conditions

https://extension.unh.edu/blog/should-i-be-worried-about-lichens-growing-bark-my-apple-trees

Thanks for the question.

Paul Winski Replied July 30, 2021, 1:51 PM EDT

This work is supported in part by New Technologies for Ag Extension grant no. 2020-41595-30123 from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.

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