Garden Club of America                       gcamerica.org

RI Federation of Garden Clubs             rigardenclubs.org

CT Federation of Garden Clubs            ctgardenclubs.org

MA Federation of Garden Clubs            gcfm.org

PA Federation of Garden Clubs             pagardenclubs.org

American Rose Society                          www.ars.org/about_roses/classification.htm

Rhode Island Rose Society                     www.rirs.og

American Hydrangea Society                  www.americanhydrangeasociety.org

North American Lily Society                    www.lilies.org/types.html

Rhode Island Wild Plant Society             www.riwps.org

New England Wildflower Society             www.newfs.org

Royal Horticulture Society                      www.hrs.org.uk

American Horticulture Society                 http://www.ahs.org/

Rhode Island Orchid Society                   www.riorchidsociety.org

Rhode Island Dahlia Society                   www.rhodeislanddahliasociety.org