The original garden in front of Townsend Hall was established with a donation from Emily Clark Diffenback in the mid-1960s, and has been named Clark Garden in her honor. It has since been designated a test arboretum by the American Holly Society. Other gardens include a Magnolia Society test garden south of Townsend Hall; native and non-native plants north of Worrilow Hall; a wildflower area in front of the Fischer Greenhouse Laboratory; a herbaceous perennial garden behind another greenhouse; and stretches of native trees and shrubs lining the driveway and grounds.