What is an ISA Certified Arborist?

arborist boulder tree care

Arboriculture is the cultivation or care of trees and shrubs and the International Society of Arboriculture (ISA) is the tree care industry’s standard for certification in the field of a arboriculture.

What does it take to become an ISA Certified Arborist?

The ISA Certified Arborist exam must be passed in order to become certified with the ISA.

Here are the prerequisites and domains we must pass in order to become certified.


* Prerequisite to taking the ISA exam: A person must have been employed full-time in the field of arboriculture for a minimum of three years or two year degree in arboriculture and two years practical experience or four year degree in a related field and one year of practical experience.

* Topics one must demonstrate knowledge of and pass on the exam:

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

The International Society of Arboriculture requires us to continue our education in order to maintain our ISA Certified Arborist certification statues. We are required to complete 30 continuing education units (CEUs) every three years. We also pay a re-certification fee.

* Reference – ISA Certified Arborist Handbook/Application – International Society of Arborculture. Revised 08/09

Boulder Tree Care is commented to providing the highest quality of tree service and plant health care.


What is an ISA Certified Arborist? was last modified: June 16th, 2016 by Boulder Tree Care