Winterthur Museum, Garden & Library

New Britain Youth Museum & Hungerford Nature Center

Greenwich Botanical Center

Bartlett Arboretum and Gardens

Western Colorado Botanical Gardens

Ventura Botanical Gardens, Inc.

UC Davis Arboretum and Public Garden

San Luis Obispo Botanical Garden

Gardens of Golden Gate Park – San Francisco Botanical Garden at Strybing Arboretum

Fullerton Arboretum