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Plant Name Registration

Naming of cultivated plants as a means to identify individual clones or groups is practiced universally for all genera.  Different plant societies and individuals have accepted the responsibility of serving as International Cultivar Registration Authorities (ICRA) for various genera.  The Royal Horticultural Society serves as the ICRA for genus Rhododendron, as well as for several other genera.  The American Rhododendron Society assists the RHS by collecting and forwarding information on North American rhododendrons and azaleas.

North Americans desiring to name rhododendrons or azaleas may do so either by:

On-line Electronic Registration

Download registration application form (.pdf format; 70kB) and instruction sheet (.pdf format; 180kB).

ISCC-NBS Color Names for Colors Included in the RHS Colour Chart


American Rhododendron Society
Executive Director: P.O. Box 525,  Niagara Falls, NY 14304
Ph: 416-424-1942   Fax: 905-262-1999   E-Mail: lauragrant@arsoffice.org
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