Jason James
President & Founder
Founder, Air Force veteran, ISA Certified Arborist since 2010.
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About Jason
Jason founded Tree Wise Men LLC in 2010 with the vision of bringing professional, certified arborist services to Janesville and Southern Wisconsin. He oversees every aspect of company operations — from complex tree removals to long-term tree health plans for residential and commercial properties.
Before founding the company, Jason served in the United States Air Force. The discipline, precision under pressure, and unwavering commitment to doing things the right way that the military taught him became the foundation of how Tree Wise Men operates: no shortcuts, no compromises, every estimate walked by a certified arborist rather than a commission salesperson.
Under Jason's leadership, Tree Wise Men has grown from a husband-and-wife operation to a team of 30+ professionals serving Rock, Dane, Walworth, and Jefferson counties — earning TCIA Accreditation (held by fewer than 400 companies nationwide), four consecutive Best of Janesville Platinum awards (2022–2025), and 700+ five-star Google reviews.
Areas of Expertise
Other ISA Certified Arborists at Tree Wise Men
Andrew Christl
Operations Manager
Operations Manager — coordinates every crew across Southern Wisconsin.
Andrew Liebetrau
Sales Lead
Sales Lead — every estimate walked by a certified arborist, not a salesperson.
Mark Tyler Schrader
Grapple Saw & Crane Operator
Crane and grapple saw operator — combines ISA arborist knowledge with heavy equipment expertise.
Get expert tree care from Jason and the team
Every estimate walked by an ISA Certified Arborist — not a commission salesperson. Same-day text scheduling, free on-site assessments.