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In 2002, the American Public Gardens Association recognized the Nationally Accredited Abies Collection at the Morris Arboretum as part of... continue
Morris Arboretum of the University of Pennsylvania
Maples have horticultural and economic significance, widespread distribution and diversity. The genus Acer has been estimated to... continue
Atlanta Botanical Garden, Hoyt Arboretum And Herbarium, Quarryhill Botanical Garden, University of British Columbia Botanical Garden, Arnold Arboretum of Harvard University, Cornell Botanic Gardens, Dawes Arboretum, Morris Arboretum of the University of Pennsylvania, Morton Arboretum, New York Botanical Garden, University of Washington Botanic Gardens, Bartlett Tree Research Laboratories & Arboretum
The Dawes Arboretum is a proud participant in the Plant Collections Network (formerly North American Plant Collections Consortium,... continue
Dawes Arboretum
In 2010, the Garden’s living collections of plants in the cactus and agave families were designated as National Collections by the... continue
Desert Botanical Garden
The Agave collection focuses on Sonoran Desert taxa and was awarded accreditation in May 2010. 
Arizona-Sonora Desert Museum
Betty Ford Alpine Gardens holds the nation’s collection of Colorado’s alpine flora. As part of this Plant Collections... continue
Betty Ford Alpine Gardens
The Denver Botanic Garden Rock Alpine Garden uses more than 500 tons of rock providing more than 20 different habitats simulating... continue
Denver Botanic Gardens
Fairchild Tropical Botanic Garden (FTBG) has developed a comprehensive collection of palms for over 65 years, emphasizing wild-collected... continue