Viewing post #3076636 by CalPolygardener

You are viewing a single post made by CalPolygardener in the thread called Apple tree fungus/disease.
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Mar 17, 2024 10:46 PM CST
California (Zone 9b)
It is lichen, a co-operation of a fungus and an algae. It is completely harmless and you don't need to do anything to it.

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