GKH_Susan
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on October 18, 2021
These generally indicate a tree is dying inside and can become a danger if it falls over. To be certain, you may want to have an arborist examine the tree. It it is a bracket fungus, he or she will likely recommend removing the tree.
https://www.gardeningknowhow.com/ornamental/fungus-lichen/tree-bracket-fungus.htm
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