Since 2002, the Arboretum has been a member of the North American Plant Collections Consortium (NAPCC), a network of botanical gardens administered through the American Public Gardens Association (APGA) in cooperation with the U.S. Department of Agriculture. The primary focus of NAPCC is the long-term preservation of germplasm for research. Participating institutions commit to holding and developing collections that are primarily organized at the genus level. The Arboretum holds six collections for NAPCC: Acer (maple), Carya (hickory), Fagus (beech), Stewartia, Syringa (lilac), and Tsuga (hemlock). Our NAPCC focus is on botanical taxa—cultivated plants are exempt—and our goal is to maximize diversity both within each genus and within each species. The Arboretum’s holdings of these six genera are quite robust, representing some of the largest and best documented collections of their kind in the world. Because of their importance, our Collections Policy prioritizes their development and care as core collections.
See this article for more information on the Arboretum’s holdings.