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Oak--Thoughts on what this may be?

Marcello
7 years ago

Attached is a photo of my 9 year old bur oak. Last season I observed what appears to be an black fungus ? in the center bottom trunk of the tree (see attached photo).

This area appears to be slightly hollow when tapped on, and
a hole seems to have developed (dead center about 1 inch above the soil line). I did not observe any new growth on the tree last
calendar year, and leaf size was below average. The tree seems to have full leaf distribution this year, and visually looks ok. Any thoughts on what the black area might be an indication of and potential associated concerns?


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