Credentials

Celtic Services is led by an I.S.A. certified arborist, Michael O’ Brien. A certified arborist is an individual who has gone through a comprehensive, rigorous training program to learn all aspects of proper tree care. In order to keep up with the latest arboriculture techniques, multiple classes are required each year.

To learn more about the certification, visit the ISA website.

View our arborist credentials at our ISA listing at this link.

In addition to formal qualifications, all lead workers and most crew members have a minimum of 10 years experience in landscaping and/or tree care.