page_title: Certified Arborist
hierarchical_section_title: Certified Arborist
caption_attribution_description: English: Photo of Oregon Arborist (Certified Arborist &amp; Certified Landscape Technician), M. D. Vaden, a small tree specialist, providing corrective pruning to a Hinoki Cypress in Beaverton, Oregon - in 2002.
context_page_description: The Certified Arborist credential identifies professional arborists who have a minimum of three years' full-time experience working in the professional tree care industry and who have passed an examination covering facets of arboriculture. The Western Chapter of the International Society of Arboriculture started the certification program in the 1980s. As the program proved its worth, it was taken over and expanded by the parent ISA organization. More recently, the ISA added specialty certifications of Utility Specialist, for those maintaining vegetation around electric utility wires, Municipal Specialist, for those with additional experience managing public urban trees, and the Board Certified Master Arborist, for those with extensive knowledge that comes with higher levels of education and experience.
context_section_description: The Certified Arborist credential identifies professional arborists who have a minimum of three years' full-time experience working in the professional tree care industry and who have passed an examination covering  facets of arboriculture.  The Western Chapter of the International Society of Arboriculture (ISA) started the certification program in the 1980s.  As the program proved its worth, it was taken over and expanded by the parent ISA organization.  More recently, the ISA added specialty certifications of Utility Specialist, for those maintaining vegetation around electric utility wires, Municipal Specialist, for those with additional experience managing public urban trees, and the Board Certified Master Arborist, for those with extensive knowledge that comes with higher levels of education and experience.
caption: A Hinoki Cypress receiving some corrective pruning by a Certified Arborist in Oregon
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