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On Thursday, I came across the handiwork of the Solitary Oak Leafminer on a swamp white oak in southwest Ohio. The leafmines were very evident; however, the population was not large enough ...
Mimosa Webworms on Honeylocust
AUG 6, 2026
Mimosa Webworm nests on honeylocusts are becoming evident in southwest Ohio. Populations of this non-native moth appear highly localized and hit-or-miss thus far this season. However, where...
A practical, targeted approach for concentrating and reducing spotted lanternfly populations in the landscape
Spotted lanternfly, Lycorma delicatula, continues to expand through Ohio and other easter...
On a recent visit to the doctor, I noticed trees in the parking lot at various stages of decline and death. It is a nice thought to plant trees in parking lot islands, but it usually ends poo...
Why Are My Trees Wilting?
MAY 13, 2026
A recent cold snap brought frost to many parts of Ohio. Some trees, especially those with new tender leaves were more heavily impacted than others.
The weak electric discharges may set off ultraviolet sparkles over large swaths of forest under storms, potentially impacting canopy health.
Nearly 200-year-old Tri-State tree could be threatened by nearby highway project. Arbor Doctor called in
JAN 3, 2026
Residents of a small town in Clinton County are uniting to protect a historic tree after hearing it may be threatened by a nearby highway project. (WKRC). Certified master arborist Ron Rothaas of the ...
The Tree Disease and Decline Spiral
DEC 21, 2025
Donβt forget the Oaks!
DEC 11, 2025
On a frosty morning in late November, the final cut has been done on the lawn, flowering baskets have been replaced by Christmas decorations, and all that’s left is to pick up leaves. Not s...
