arboretum | Morris Arboretum | Arnold Arboretum | Arboretum | National Memorial Arboretum | Hippolyte Bernheim | Dinosaur State Park and Arboretum | Westonbirt Arboretum | National Arboretum Canberra | Bernheim Arboretum and Research Forest | W. Gordon Belser Arboretum | Thorp Perrow Arboretum | Slayton Arboretum | Planting Fields Arboretum State Historic Park | Minnesota Landscape Arboretum | Lyon Arboretum | Los Angeles County Arboretum and Botanic Garden | Isaac Wolfe Bernheim | Hoyt Arboretum | Dallas Arboretum and Botanical Garden | Colonial Park Arboretum and Gardens | ''C. lacteus'' plants, University of New Mexico Arboretum | Blithewold Mansion, Gardens and Arboretum |
Examples were sent to the Longstock Park Nursery in the UK by the Bernheim Arboretum for assessment, but there are no plans to release them to commerce.
Examples of all the cultivars were sent to the Longstock Park Nursery in the UK by the Bernheim Arboretum for assessment, but only 'Miss Virie' survives (2012).