photo: James W. Smith
1. The upper third of a tree dies back first, followed by the rest the next year.
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photo: MI Dept of Agriculture
2. This is followed by many shoots or sprouts emerging below dead portions of the trunk.
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photo: David Roberts, MSU
3. The canopy continues to decline until the tree eventually dies.
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photo: R.Anderson, USDA FS
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photo: R.Anderson, USDA FS
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| 4. Woodpecker activity is an ‘early warning sign’ of emerald ash borers.
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BUT REMEMBER...
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photo: R. Rabaglia, MDA
5. Emerging adults leave tell-tale D-shaped exit holes behind…
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