Ian McKenzie is now a Master Arborist.   This “is the highest level of certification offered by ISA (International Society of Arboriculture). This credential recognizes ISA Certified Arborists® who have reached the pinnacle of their profession. In addition to passing an extensive scenario-based exam, candidates must abide by a Code of Ethics, which ensures quality of … Continue reading ISA BOARD CERTIFIED MASTER ARBORIST®