Mark A Webber

West Chester, Ohio, (Available Nationwide)

General Specialty

Dendrochronological Specialties

Specialty Focus

Appraisals of Damaged Crops Arboriculture
Bee Keeping
Branch Failures
Crop and Tree Injuries
Flood Damage Trees
Herbicide Damage
Horticultural Issues
Limb Failure
Management of Arboricultural Operations
Management of Nursery Stock
Pesticide Use
Plant Injuries
Tree Failures
Tree Management
Tree Risk Assessments
Tree Roots
Tree Value
Utility Vegetation Management
Worker Practices

Primary Areas of Expertise

Arboriculture & Horticulture

Mark A. Webber holds nineteen different certifications, qualifications, accreditations, and licenses in arboriculture and horticulture. Most notably, Mr. Webber is a Register Consulting Arborist, Board Certified Master Arborist, and a Certified Professional Horticulturist with over forty-five years of relevant professional experience.

Mr. Webber provides investigations, reports, and testimony in matters related to tree condition, maintenance, removal and agricultural as well as horticultural matters. His expertise includes the management of nursery, arboricultural and horticultural and agricultural operations, dendrochronology, pesticide use, crop, and tree injuries due to biotic and abiotic conditions, appraisals of damaged crops, trees, and plants, tree failures, and tree failures due to biotic and abiotic conditions, and an assortment of agricultural, arboricultural and horticultural issues. Mr. Webber is an admitted member of approximately thirty-two industry organizations, including the American Society of Consulting Arborists, Chartered Institute of Horticulture, International Dendrology Society, Tree-Ring Society, American Phytopathological Society, and the OSHA (Occupational Safety and Health Administration) Small Business Advocacy Review Panel for Tree Care Industry Rules. Mr. Webber has been a court-qualified expert in his field in the state courts of Ohio, Michigan, New Jersey, North Dakota, Washington, and California. Mr. Webber has also been qualified to testify in Federal Bankruptcy Court proceedings.

Mr. Webber has been working at farms and nurseries since 1975. He remains active in his industry by serving on various committees and boards and as the Founder/Co-owner of arboricultural and horticultural firms. In this capacity, he often provides a full range of technical assistance regarding landscape design, installation, and landscape management. Mr. Webber often provides tree evaluations, tree risk assessments, plant inventories, and lawn care, weed and pest control advice to clients. Additional services include professional opinions regarding drainage improvements, soil health and nutrient levels, root system location and management, management of trees during construction, installation of retaining walls, consulting, and other related areas. Mr. Webber has worked as a Research Assistant for the BASF Corporation involving fungicides, insecticides, and herbicides trials on a diverse assortment of economically import agricultural and horticultural crops. He also served as an Apiary (Honeybee) Technician for The Ohio State University.

Mr. Webber is a Master Nursery Technician by the Ohio Nursery & Landscape Association. He is designated as a MArborA by the United Kingdom’s Arboricultural Association. Mr. Webber is also a New Jersey Licensed Tree Expert (LTE #639) and is a Licensed Arborist in multiple states. The American Society of Horticultural Science board has designated Mr. Webber as a Certified Professional Horticulturist. Mark is admitted to the American Society of Consulting Arborists (ASCA). ASCA has credentialed Mr. Webber as a Tree & Plant Qualified Appraiser (TPAQ) and Registered Consulting Arborist (RCA) #706.



  • The Ohio State University – A.A. S. & B.S., Horticulture
    1979 – 1984
  • Findlay Ohio High School – College Preperation, College/University Preparatory and Advanced High School/Secondary Diploma Program
    1977 – 1979
  • Graduate from ASCA (American Society of Consulting Arborist) Consulting Academy in Sacramento, California. 2020



  • I.S.A. Board Certified Master Arborist OH-0824BUM, International Society of Arboriculture, (I.S.A. Certified Arborist, 1998-2013)
  • Wildlife Protector Certification, Wildlife Training Institute.
  • Certified Tree Expert #639, Board of Tree Experts Jackson, NJ.
  • Certified Professional Horticulturist #30086, American Society for Horticultural Science, Alexandria, Virginia.
  • I.S.A. Certified Arborist Municipal Specialist, International Society of Arboriculture.
  • I.S.A. Certified Arborist Utility Specialist, International Society of Arboriculture.
  • Ohio Commercial Pesticide Applicator 6A, 6C, 8
  • Master Nursery Landscape Technician, Ohio Nursery & Landscape Association (ONLA)
  • MArborA, designated by the Arboricultural Association, United Kingdom
  • Wildlife Protector Certification, Wildlife Training Institute
  • Tree Risk Assessment Qualified (TRAQ), International Society of Arboriculture.
  • Tree and Plant Appraisal Qualification (TPAQ), American Society of Consulting Arborists.
  • Sky Warn Weather Spotter Training Certification, National Weather Service
  • Registered Consulting Arborist #706, American Society of Consulting Arborists.


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