Susquehanna Orchid Society
- Includes membership information, orchid photos and member activities.
- http://www.susquehanna-orchid.org/

Southeastern Pennsylvania Orchid Society
- Includes meeting dates and location, as well as links to orchid related items, and orchid culture.
- http://www.sepos.org/

Greater Philadelphia Orchid Society
- Includes information about upcoming events, the board of directors, a newsletter, and links to vendors and member websites.
- http://www.greaterphilaorchidsociety.org/

Bucks County Orchid Society
- Presents its upcoming meetings and events, orchid news, and online resources.
- http://www.buckscountyorchidsociety.org/