Plants
- 421
- Rocky Mountain Chapter of the North American Rock Garden Society
- Meets in Denver, Colorado. Information about events and membership, collection of articles from past newsletters, plant portraits, and resource links.
- 422
- Manly Warringah Orchid Society
- Located in Manly Warringah, Australia. Membership information, photos and show information.
- 423
- Sutherland Shire Orchid Society
- Organization in New South Wales presents its history, information on orchid growing, photos galleries, and upcoming events.
- 424
- Western Australian Regional Orchid Organisation
- The peak body of 11 orchid societies throughout the state presents its conference, events and lectures, and information about orchid tours.
- 425
- Canadian Orchid Congress
- Association of Canadian orchid societies dedicated to serving the orchid-growing public. Information on speaker tours, orchid shows and conventions, vendor links, and newsletter archives.
- 426
- Eastern Canada Orchid Society
- Montréal-area group of orchid hobbyists presents information about its meetings and fall show, membership, and photos. [English/French]
- 427
- Orchid Society of the Royal Botanic Gardens
- Society in Ontario presents its events and annual show, informational pages on Canadian native orchids, and library catalog.
- 428
- Southern Ontario Orchid Society
- Meets in Toronto. Event calendar, newsletters, information and photos of annual show, and plant of the month page.
- 429
- The Manitoba Orchid Society
- Society based in Winnipeg for enthusiasts of both native and exotic orchids presents information about its annual show, newsletters, and a bulletin board.
- 430
- Victoria Orchid Society
- British Columbia group presents its meetings, newsletter archive, membership information, list of recommended books, and plant of the month.
- 431
- British Paphiopedilum Society
- Society focusing on various genuses of slipper orchids. Provides details about membership, journal, activities, plant information and a photo gallery.
- 432
- The Wessex Orchid Society
- The Orchid Society members are from the Hampshire, Surrey and Sussex region.
- 433
- Cymbidium Society Of America
- Dedicated to the culture and propagation of cymbidiums, paphiopedilums and other cool growing orchids. Includes membership information and a list of branch societies.
- 434
- MidAmerica Orchid Congress
- An organization of orchid societies in the central U.S. sponsoring bi-annual shows. List of officers and contacts.
- 435
- Northwest Orchid Society
- Includes membership application, photographs, meeting schedules and newsletters.