American Bonsai Society – http://www.absbonsai.org
American Conifer Society – http://www.conifersociety.org
American Hemerocallis Society (AHS) – http://www.daylilies.org
American Rhododendron Society – http://www.rhododendron.org
Delaware Valley Hosta Society – http://www.delvalhosta.org
Bonsai International – http://www.internationalbonsai.com
Daylily Exchange – http://www.daylily.com
North American Rock Garden Society – http://www.nargs.org
Susquehanna Bonsai Club
Susquehanna Hosta Society