Apple Trees

I’ve seen pictures like the ones I am attaching but I still don’t know exactly what this is on my dwarf apple trees Could you please I.D. this for me and suggest when and what to treat it with?
Any help will be greatly appreciated

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1 Comment To "Apple Trees"

#1 Comment By MichiganDot On 02/14/2018 @ 7:16 pm

Those are tiny plants called lichens. In general they are harmless and common on fruit trees.

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