Filamentous Lichens on Trees in Western NC: Harmless Epiphytes

The Question

Usnea‑like lichens on trees in western North Carolina. Will they harm the trees?

Lichens are not plant pathogens. They grow on bark surface, don’t penetrate tissue. Indicate good air quality.

Read UAEX fact sheet FSA‑7554 (link provided) for full details.

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