Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 3-5) (8 photos)
Denver Botanic Gardens - Description, native range, and cultural requirements. (zone 4) (3 photos)
Missouri Botanical Garden - Plantfinder page for one of the plants growing at the garden, with usually one or more photos, horticultural information, and noteworthy characteristics. (zone 4-7) (13 photos)
(8 photos)