• Vegetation management
• Ecology and horticulture of native plants
• Invasive exotic woody plants
• Large and historic trees

As Arboretum Director, Glenn Dreyer oversees all department functions, including education, planning, land management, collection curation, research and fund raising. Mr. Dreyer reports to the Dean of the Faculty, and works closely with faculty and students in the life sciences and a variety of administrators, including the Director of Physical Plant and the Supervisor of Grounds.

Glenn Dreyer started working for the Connecticut College Arboretum in a landscape maintenance capacity while still a graduate student in 1982. The next year he became Assistant Arboretum Director under William A. Niering. In 1988 he was appointed Arboretum director.

Mr. Dreyer is also an adjunct professor of botany and the executive director of the College's Goodwin-Niering Center for Conservation Biology and Environmental Studies. His professional and research interests have to do with the interface between horticulture and ecology.

He is the author of the books Connecticut's Notable Trees and Greening Connecticut Cities & Towns: Managing Public Trees and Community Forests, and a variety of professional publications on invasive species and vegetation management.

Mr. Dreyer serves on the Connecticut Urban Forest Council and the Connecticut Tree Protection Examining Board. On campus he is a member of the Environmental Model Committee and the Facilities and Land Management Committee.

Off campus Glenn enjoys playing the great highland bagpipe and Scottish Smallpipes and helping his wife Wendy with her Australian shepherd dogs.