| Accokeek Foundation | 1 | |
| ACRT Inc. | 1 | Available - click to view |
| Akehurst Landscape Service | 1 | |
| Andy Mast Greenhouses | 1 | |
| Beds and Borders, Inc | 1 | |
| Cabrini College | 1 | |
| College of Lake County | 1 | |
| Colorado State University Extension | 2 | |
| Conrad Fafard Inc. | 1 | |
| Cornerstone Solutions Group | 1 | |
| Dan & Jerry's Greenhouses | 1 | |
| Denison Landscaping | 1 | |
| Dreamscape Designs, Inc. | 1 | |
| Eastern Land Management | 1 | |
| Evergreen Landcare | 1 | |
| Forest Park Forever | 1 | |
| Garden of Eve Organic Farm | 1 | |
| Grubb & Ellis | 1 | |
| Habersham Gardens Inc. | 1 | |
| L.M.L. Estate Management Corporation | 1 | |
| Lawrence Landscape, Inc. | 1 | |
| Len Busch Roses | 1 | |
| live green landscape associates | 1 | |
| Lurie Garden, Millennium Park | 1 | |
| McHutchison | 1 | Available - click to view |
| Molbak's LLC | 1 | |
| Moon Nurseries | 2 | |
| Neal Mast & Son Greenhouses, Inc. | 1 | |
| New York State Office of Parks, Rec & His Pres | 1 | |
| North Creek Nurseries | 1 | |
| Northern Nurseries | 2 | Available - click to view |
| Parker Homescape, LLC | 2 | |
| Paul Ecke Ranch | 2 | |
| plant partners inc. | 1 | |
| Proscape Landscaping | 1 | |
| Ritters Nursery and Florist | 1 | |
| San Francisco Zoo | 1 | |
| Seed Savers Exchange | 2 | |
| Shemin Nurseries Inc. | 4 | |
| Sheridan Nurseries | 4 | |
| Swift Greenhouses, Inc. | 1 | |
| The Care of Trees | 4 | |
| The Care of Trees.. | 1 | Available - click to view |
| The Holden Arboretum | 1 | |
| The New York Botanical Garden | 1 | Available - click to view |
| The Pattie Group Inc | 1 | |
| University of Nevada Cooperative Extension, Wester | 1 | |
| Westhaven Landscaping Inc | 1 | |
| Zelenka Nursery, LLC | 1 | |
