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 5-8) (6 photos). Also pages for 'Blue Shades', 'Blue Star', and 'White Splendour'.
NARGS Image Gallery - Photograph(s) contributed by North American Rock Garden Society members. (1 photo)