Nearly 300 kinds of woody plants are cultivated on 20 acres between Williams St. and Gallows Lane. Within the Caroline Black Garden, the Arboretum houses a mature collection of ornamental trees and shrubs from all over the world. Established in the 1920s, this garden offers over 180 different taxa of native and exotic ornamental woody plants. The College Campus is another wonderful place to observe unusual tree and shrub plantings. The campus collection currently includes 223 taxa of trees and numerous shrubs.
Some images are available.
The database is generally focused on plants native to the Northeastern U.S. and is currently limited to monocots. To visit the Charles B. Graves Herbarium follow this link. The Arboretum also includes tracts of land which are not dedicated to specific plant collections but are preserved natural or managed areas. These areas offer a rare look at some of the region's habitats of native plants and animals. Two tracts totaling about 200 acres are dedicated as Natural Areas.