If you've ever called around for tree work, you've probably noticed that companies use a range of titles — tree service, tree surgeon, arborist, tree cutter. These terms are not interchangeable, and the differences matter more than most homeowners realize.
An arborist is a professional who specializes in the cultivation, management, and study of individual trees, shrubs, vines, and other perennial woody plants. While a logger focuses on harvesting timber and a landscaper focuses on overall yard design, an arborist's specific focus is the long-term health, structure, and safety of trees.
A certified arborist has passed a rigorous examination administered by the International Society of Arboriculture (ISA) and maintains that certification through ongoing education. In Canada, the ISA partners with regional organizations to administer certification. At Axe & Wedge Tree Works, our team includes ISA Certified Arborists and TCIA (Tree Care Industry Association) accredited professionals.
What Does an Arborist Actually Do? Arborists assess the health and structural integrity of trees. They identify disease, pest infestations, decay, and structural defects. They prescribe and perform pruning to improve health, safety, and form. They evaluate whether a tree should be preserved or removed. They plan and oversee safe removal of trees that cannot be saved. They provide written reports for insurance claims, property disputes, or development applications.
Why Does Certification Matter? Tree work involves chainsaws, climbing, and heavy machinery. An uncertified worker may be able to cut down a tree — but they may not know how to evaluate whether a tree can be safely directionally felled, how to identify decay that affects the structural integrity of the trunk, how to prune without causing long-term damage, or when a tree can be saved versus when it must come down.
Improper pruning is one of the most common and costly mistakes homeowners encounter. Flush cuts, topping, and over-thinning can permanently damage a tree, invite disease, and ultimately shorten its life — often requiring expensive removal years later that proper care could have prevented.
The Bottom Line. When hiring someone to work on your trees, ask for ISA certification, proof of liability insurance, and WSIB coverage. These aren't bureaucratic formalities — they're indicators that you're dealing with a trained professional who will treat your trees as the long-term investments they are. At Axe & Wedge, we're happy to provide all of this before any work begins.
