Hoyt Arboretum

Woodward Park and Gardens (aka Tulsa Garden Center)

The Stanley M. Rowe Arboretum

Ohio State University Secrest Arboretum

Ohio State University Chadwick Arboretum & Learning Gardens

Mill Creek MetroParks – Fellows Riverside Gardens

The Herb Society of America

Cox Arboretum MetroPark

Wilson Botanical Gardens

Sarah P. Duke Gardens – Duke University