Plants
- 401
- Treedome: Living Architecture
- Pictures, advantages, and reference information about arborsculpture projects.
- 402
- Adirondack Chapter
- Chapter active in upstate New York. Blog, newsletter archive, events, plant profiles, and member gardens.
- 403
- Berkshire Chapter (BNARGS)
- New England chapter presents its activity calendar, members' gardens, news, and rock gardener links.
- 404
- Calgary Rock & Alpine Garden Society
- Alberta chapter of NARGS. Event listing, photos, membership information, and links.
- 405
- Great Lakes Chapter of the North American Rock Garden Society
- Michigan-based group presents brief membership and meeting information.
- 406
- NARGS of Minnesota
- Listing of events, photo albums, seed exchange information, and materials available to members.
- 407
- Ohio Valley Chapter of the North American Rock Garden Society
- Overview of events, information about officers and membership, and an archive of newsletters.
- 408
- Potomac Valley Chapter
- Chapter meets in the greater Washingon, DC area. Calendar, archive of bulletins, photo galleries, and a list of good rock plants for the area.
- 409
- Quebec Alpine & Rock Garden Society (SPARQ/QARGS)
- Society with activities centered around the Montreal Botanical Garden, aiming to familiarize novice and experienced gardeners with alpine flora and gardens. Information about membership and seed exchange, meeting schedule, and photo gallery [French/English]
- 410
- 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.
- 411
- Manly Warringah Orchid Society
- Located in Manly Warringah, Australia. Membership information, photos and show information.
- 412
- Sutherland Shire Orchid Society
- Organization in New South Wales presents its history, information on orchid growing, photos galleries, and upcoming events.
- 413
- 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.
- 414
- 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.
- 415
- Eastern Canada Orchid Society
- Montréal-area group of orchid hobbyists presents information about its meetings and fall show, membership, and photos. [English/French]
- 416
- 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.
- 417
- Southern Ontario Orchid Society
- Meets in Toronto. Event calendar, newsletters, information and photos of annual show, and plant of the month page.
- 418
- 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.