The International Society of Arboriculture is a World wide professional organization dedicated to fostering a greater appreciation for trees and to promoting research, technology and the professional practice of Arboriculture. The ISA was founded in 1924 and today there are over 20000 professional members World wide.
ISA certified arborists are individuals who have achieved a level of knowledge in the art and science of tree care through at least 3 years of experience and having passed a comprehensive examination. We are also required to continue our education in order to maintain our certification, ensuring that our knowledge is up to date on the latest arbicultural techniques. Certification provides a measurable assessment of an individual’s knowledge and competence required to provide proper tree care. Click the link to verify a certified arborist.
ISA Certified Tree Worker/Climber Specialists are individuals who have a minimum of 18 months professional experience climbing trees in a safe and efficient manner to perform tree care. They have knowledge in the major aspects involved in tree care, including pruning, removal, cabling and safety. They must pass a knowledge exam and a skills exam conducted by qualified evaluators.
The Tree Care Industry Association is a 70 year old public and professional resource on trees and arboriculture representing approximately 2100 tree service and affiliated company members.