About That Tree Guy

That Tree Guy is owned and operated out of Aylmer, Ontario by me, Thomas Harder. I started my career in tree work in 2014 after I found a job posting online for a tree climber. Until that moment, I hadn’t realized that there was a job that involved three things I enjoyed: climbing/ropes, trees/outdoors and chainsaws.

In early 2015 I began this career as a ground’s men working for Davey Tree Services in London. While working there I became an Arborist apprentice and competed the Aboriculture program at Humber College in Mississauga. After completing this, in 2017 I set out on my own as a contract climber, servicing local tree services on an as needed basis. In 2019 I acquired some larger equipment and went to work as a full tree service. Today, That Tree Guy is equipped with a bucket truck that reaches 60 feet, a 15-inch chipper, a tracked stump grinder, tracked mini skid-steer, chainsaws of every size and enough ropes and safety equipment to get your job done safely and professionally.

Currently, That Tree Guy employs 3-4 additional staff, including my wife Marissa who handles the phone and the office side of things. Both born and raised in Aylmer, we have come to know and love the area and are now raising our three daughters here.

In 2024, I wrote the International Society of Aboriculture, or ISA exam and am now a certified Arborist. Continuing in my education allows me to remain up to date on standards, safety measures and new ways to get the job done.

At That Tree Guy, communication is key. We strive to show up when we say we will and to keep you informed every step of the way. We appreciate every opportunity to serve our customers and look forward to meeting you!