Plum Trees

fruit tree has something growing on bark

Zone 8 | jgunn added on March 26, 2015 | Answered

Its grayish in color. The tree is a yellow plum.

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Certified GKH Gardening Expert
Answered on March 26, 2015

It looks like a form of tree lichen. I recommend you read the following article which discusses tree lichen in more detail along with a prescribed course of treatment:

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