What is a Certified Arborist?


ISA Certified Arborists are individuals who have achieved a level of knowledge in the art and science of tree care through at least three years of experience and have passed a comprehensive examination. They are also required to continue their education in order to maintain their certification, ensuring their knowledge is updated on the latest arboriculture techniques. ISA Arborist Certification is a non-governmental voluntary process that operates without mandate of law. It is an internal self-regulating device administered by the International Society of Arboriculture.  Certification provides a measurable assessment of an individual’s knowledge and competence required to provide proper tree care.  The Arborist Certification exam covers the following domains:


  • Tree Biology
  • Soil Management
  • Tree Risk Assessment
  • Installation & Establishment
  • Tree Identification/Selection
  • Urban Forestry
  • Tree Protection
  • Pruning
  • Safe Work Practices
  • Diagnosis & Treatment



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