This five acre (two hectare) garden showcases 893 plants representing 442 taxa (kinds), 335 species, 79 genera, and 34 families. Eighty-four percent of the plants in the garden are members of the rose family (Rosaceae). Taken together, the collections provide rich learning opportunities and seasonal interest.
In June 2011, the Arboretum installed and dedicated a new rose arbor in the Bradley Rosaceous Collection. The arbor honors Elizabeth Cabot Sluder, a longtime friend and supporter of the Arboretum and daughter of the collection’s benefactor and namesake, Eleanor Cabot Bradley. The installation of the arbor capped off a four-year renovation of the collection and its garden landscape, a collaboration between Arboretum staff and landscape designer Julie Moir Messervy. With a graceful design inspired by Messervy and developed by metal artist Peter Andruchow and his company WovenSteel, the arbor supports new accessions of Rosa ‘New Dawn’ and R. ‘Sombreuil’.