Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zones 5a-7b) (2 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 5 to 7) (2 photos). Also pages for Aconitifolium, Green Cascade, and Vitifolium.
Rainy Side Gardeners: Acer japonicum 'O isami' - Plant profile compiled by two gardeners in the Pacific Northwest. Includes propagation and pruning methods, and commentary. (zone 5-8) (1 photo)
(1 photo).