We pride ourselves at Davey Tree on providing prompt, professional and personalized service from certified arborists that live, work and engage in your community. Contact one of our Davey Tree specialists for your residential, commercial, utility, or environmental needs.
Vice President & General Manager, The Davey Institute
Jim Zwack is the Vice President & General Manager of The Davey Institute. He is an expert in tree disease and stressors, with special emphasis on the emerald ash borer.
Zwack has over 17 years of experience within the green industry. He’s previously chaired the Education Committee for the Minnesota Society of Arboriculture, served on the Board of Directors for the Society of Commercial Arboriculture, and is a past President of the TREE Fund.
He has a B.S. in urban forestry from the University of Minnesota and an M.S. in plant physiology from Iowa State University.
Zwack’s work focuses on providing assistance to trees that grow in unnatural, urban environments so they can reach their full landscape potential.
Expertise: EAB, tree research