An ash tree thinning from the top in Memphis
A thinning ash needs assessment before a decision about treatment or removal. Emerald ash borer is one concern to investigate; a sparse canopy alone does not confirm the insect.
Updated November 2, 2026
What might be happening?
Tennessee Forestry describes wilted leaves, branch death and a sparse canopy as signs of EAB damage. Increased woodpecker activity on ash can also be a clue. Those observations need to be assessed together, not treated as a diagnosis from one photograph.[14]
What to tell the arborist
Note when thinning began and whether the upper crown changed first. Tell us about woodpecker damage and any previous treatment. Do not strip bark or climb to search for insects.
The next step
Ask the arborist to confirm the tree species, investigate the cause and assess whether the tree is still a suitable treatment candidate. The statewide source does not, by itself, establish EAB at your Memphis property.
What not to assume
Tennessee Forestry cautions that treatment effectiveness varies and heavily thinned trees may no longer be treatable. Do not assume all ash should be removed, or that an injection will save a tree in advanced decline.[14]
This is general guidance, not a diagnosis. Your arborist confirms the cause and treatment suitability on site; some concerns also need laboratory confirmation.
Immediate danger from a tree or hanging limb? See 24/7 storm help. Stay away from downed lines and anything touching them; call the utility for electrical hazards and 911 for injuries.