Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zones 4a-9b) (25 photos)
Kemper Center - Plantfinder page for one of the plants growing at the Missouri Botanical Garden, with usually one or more photos, horticultural information, and noteworthy characteristics. (zone 4 to 9) (4 photos)
Missouri Plants - Description and photographs of botanical features, with notes about habitat and native status. (5 photos)
Rob's Plants - Plant profile with basic horticultural information and often personal observations. (4 photos)
Sunlight Gardens - Wildflower nursery catalog page with description and cultivation details. (zone 4-8)
(1 photo)