James Zwack

Jim Zwack is a dynamic executive leader with more than 25 years of experience advancing environmental consulting, research, and sustainability services across the green industry. As Vice President at Davey Resource Group, he provides strategic vision, operational leadership, and financial oversight for a national portfolio of consulting services that span wetlands, ecosystem restoration, stormwater compliance, and urban forestry. Earlier in his career at Davey, Jim served as Vice President and General Manager of the Davey Institute, where he oversaw a nationwide team of scientists, technical advisors, and innovation specialists.

Jim is an accomplished speaker and media presence, having delivered more than 200 professional presentations and served as the on-camera host for over 35 “Talking Trees” podcast and video series that features arborists sharing advice on tree care related topics. He is a member of the International Society of Arboriculture and a former Board Chair and Trustee Emeritus of TREE Fund.