Preservation & Promotion in Plant Collections Management

The American Public Gardens Association Plant Collections Network
coordinates a continent-wide approach to plant germplasm preservation, and promotes excellence in plant collections management.

Nationally Accredited Plant Collections may serve as references for plant identification and cultivar registration. Collection holders make germplasm available for taxonomic studies, evaluation, breeding, and other research. Participating institutions compare holdings with others to identify duplications and gaps. This makes efficient use of available resources, strengthening collections through combined collaborative activities.


Holding a Nationally Accredited Plant Collection™ is added recognition of your institution’s long-term commitment to plant collections preservation, and to achieving a high standard of excellence in plant collections management.

Participating institutions maximize the potential value of their collections by making efficient use of available resources through a coordinated continent-wide approach, and strengthening their own collections through collaboration with others.

Preparing for the written application and peer site review focuses attention on your plant collections, can help drive strategic planning, and provide a measurable goal for staff.

Specialized professional development opportunities and curatorial networking groups keep participants apprised of latest developments.

Institutions stewarding a Nationally Accredited Plant Collection™ have opportunities to take part in grant-funded projects available through their collaborative activities.

Participation is highlighted through features in American Public Gardens publications, conferences, and website.


Collections Showcase


Morris Arboretum’s Abies collection was officially recognized in 2002. The Arboretum’s goal for its fir collection is to display a…

Morris Arboretum of the University of Pennsylvania


Acer Multisite

Maples have horticultural and economic significance, widespread distribution and diversity. The genus Acer has been estimated to…

Arnold Arboretum of Harvard University, Atlanta Botanical Garden, Bartlett Tree Research Laboratories & Arboretum, Cornell Botanic Gardens, Dawes Arboretum, Hoyt Arboretum, New York Botanical Garden, Sonoma Botanical Garden, U.S. National Arboretum, University of British Columbia Botanical Garden, University of Washington Botanic Gardens



Buckeyes and horse-chestnuts (genus Aesculus) are well known for their displays of gorgeous flowers followed by characteristic nuts that…

Dawes Arboretum



In 2010, the Garden’s living collections of plants in the cactus and agave families were designated as National Collections by the…

Desert Botanical Garden

Plant Heroes Large

Plant Heroes

The Plant Heroes Youth Program is a valuable resource for public garden professionals, parents and teachers looking for innovative ways to educate young learners about the importance of plants and engage them in protecting forest health.