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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Welcome to Arbor Doctor LLC!
Our team will provide you with landscape and tree care solutions in Greater Cincinnati, Southwest Ohio, Northern Kentucky, and Southeast Indiana.
Welcome to Arbor Doctor LLC!
Our team will provide you with landscape and tree care solutions in Greater Cincinnati, Southwest Ohio, Northern Kentucky, and Southeast Indiana.
Unlike pesticide-centric plant health care programs, our organic nutrients are healthy for your plants. The nutrients thicken the cell walls to help the plants defend against insect attacks and be as resistant as possible to disease. Pesticides may still be utilized, but only in a targeted, limited fashion. We use pesticides which are low or no toxicity whenever possible.
Blog
You get what you pay for in a consulting arborist
MAY 16, 2025
I take education and knowledge seriously. Here are classes I have attended just over the past 3 years. 245 hours toward 60 needed for recertification.
Knowledge and education costs in time and dollar...
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MAY, 2025
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...
A Fork in the Road: How Pruning Decisions Impact Codominant Unions
MAY 15, 2025
Ronald E. Rothhaas, Jr.
ISA Board Certified Master Arborist®
ISA BCMA OH-5177B, TRAQ, TPAQ
Arbor Doctor owner Ron Rothhaas is a Registered Consulting Arborist (RCA), an ISA Board Certified Master Arborist®, a frequent contributor to the nationally syndicated In The Garden With Ron Wilson radio gardening show, and is the primary author and contributor of the Plant Health Care Newsletter for the Ohio Green Industry Association. Ron has been an ISA (International Society of Arboriculture) Certified Arborist® since 2004 and in February 2017 passed the exam for ISA Board Certified Master Arborist®.
RCAs have achieved the highest level of arboricultural credentialing available and can handle the most challenging and highest-profile assignments.
The ISA Board Certified Master Arborist® credential is the highest level of certification offered by ISA. This credential recognizes ISA Certified Arborists® who have reached the pinnacle of their profession. In addition to passing an extensive scenario-based exam, candidates must abide by the ISA Board Certified Master Arborist® Code of Ethics which ensures quality of work and high ethical standards. Fewer than two percent of all ISA Certified Arborists® currently hold this certification. Ron’s expertise is highly valued in the horticultural and arboricultural communities and he in a frequent guest on the In The Garden With Ron Wilson radio show, occasionally even co-hosting the gardening show originating from Cincinnati but broadcast nationwide on affiliate stations and iHeart Radio.
Weather Blog
Conditional severe storm and flooding threat today
MAY 20, 2025
There is a conditional severe weather threat for the Cincinnati tri-state area today and this evening.
By far the greatest severe weather threat is to the south of Cincinnati. Severe storms, flooding...
May 2025 Weather and Climate Summary
MAY 19, 2025
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MAY, 2025
May 18, 2025 Soil Moisture, Condition Monitoring and Drought Update
MAY 18, 2025
Diminishing drought in the east-central US. Continued widespread and severe to exceptional drought in parts of the plains, the Rockies and the southwest.
Companies We Work With
