As readers of this blog and our work may know, codominant branches are unreliable predictors of tree failure during storms. At the same time, numerous studies have found that codominant branch union...
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August Arbor Doctor Client Update
AUG 18, 2025
Happy August!
It's dry out there, at least in some areas.
Rainfall has been highly variable this summer. Most areas saw very wet conditions in July, but the spigot has shut off for some in August. W...
On the morning of July 26, 2025, Arbor Doctor Principal Owner Ron Rothhaas joined radio host Ron Wilson on 55WKRC and iHeart Radio to talk trees.
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20 Questions of Plant Diagnosis
JUL 24, 2025
Diagnosing plant problems is often a complex, multifaceted process that requires observation, investigation, and integration of site-specific knowledge. A structured diagnostic approach reduces guessw...
Anvil vs. Bypass: The Saga Continues
MAY 15, 2025
What we’ve been up to:
On a sunny day in April (the day before my birthday in fact) I spent a joyful hour in a field of young oak trees. Was I perusing the branches for birds or sitting idly with a b...
Woodland Edge Trees and Shrubs
APR 11, 2025
| Bottlebrush Buckeye | Aesculus parviflora |
.JPG&Genus=Aesculus&Species=parviflora&Common=Bottlebrush Buckeye&Cultivar=) .JPG&Genus=Aesculus&Species=parviflora&Common=Bottlebrush Buckeye&Cultivar=) .JPG&Genus=Aesculus&Species=parviflora&Common=Bottlebrush Buckeye&Cultivar=) .jpg&Genus=Aesculus&Species=parviflora&Common=Bottlebrush Buckeye&Cultivar=)  .JPG&Genus=Aesculus&Species=parviflora&Common=Bottlebrush Buckeye&Cultivar=)  |
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| Alleghany Serviceberry | Amelanchier laevis |
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| Devil's Walkingstick | Aralia spinosa |
| Red Chokeberry | Aronia ... |
Native herbaceous plants and shrubs
APR 11, 2025
| Bottlebrush Buckeye | Aesculus parviflora |
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| Red Buckeye | Aesculus pavia |
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| Alleghany Serviceberry | Amelanchier laevis |
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| Arkansas Amsonia | Amsonia... |
Arborvitaes. Why are some dying?
APR 8, 2025
Arborvitae is a plant that is widely used as an evergreen hedge or screen. Some are suffering or completely dead. What can be done?
Ohio Tree Planting Guide
APR 3, 2025
As temperatures warm, Spotted Lanternfly (Lycorma delicatula) (SLF) eggs laid last fall will begin to hatch later this spring. The National Phenology Network is forecasting SLF egg hatch in...
