American Orchid Society Forum: This message board, open to the general public, includes forums on growing, propagating, hybridizing, photography, and events.
Cymbidium Society of America: Forum: Discussion forum for the Cymbidium Society of America.
GardenWeb: Orchid Forum: Message forum offers advice and information for orchid hobbyists.
International Cypripedium Forum: Discussion board about hardy Lady's Slipper orchids.
Orchid Board: Series of forums on various aspects of orchid culture.
Orchid Garden Discussions: Tips on growing orchids from Suite101.com.
Orchid Geeks: A set of forums for orchid enthusiasts, covering care and cultivation, propagation, supplies, photography, as well as general chat.
Orchid Safari: Regularly scheduled live chat sessions. Archives of past chats available.
Terrestrial Orchid Forum: For the discussion of the culture of terrestrial orchids, including forums for exchanging seeds, cuttings and plants.
Yahoo! Groups: Paphiopedilum Orchids: Devoted to amateur growers of lady's slippers.