Komo Kulshan Chapter of the
American Rhododendron Society
Burlington, WA
Rhododendron Species Foundation
Western North American Rhododendron Species Project
Atlantic Rhododendron and Horticultual Society
Azalea Chapter of the American Rhododendron Society
Cascade Chapter of the American Rhododendron Society
Connecticut Chapter of the American Rhododendron Society
Cowichan Valley Rhododendron Society
Danish Chapter of the American Rhododendron Society
De Anza Chapter of the American Rhododendron Society
Dutch Chapter of the American Rhododendron Society
Eugene Chapter of the American Rhododendron Society
Fraser South Rhododendron Society
Fraser Valley Rhododendron Society
Mason-Dixon Chapter of the American Rhododendron Society
American Rhododendron Society Massachusetts Chapter
Mount Arrowsmith Rhododendron Society
Nanaimo Rhododendron Society
New York Chapter of the American Rhododendron Society
Peace Arch Rhododendron Society
Piedmont Chapter of the American Rhododendron Society
Pilchuck Chapter of the American Rhododendron Society
Portland Chapter of the American Rhododendron Society
Potomac Valley Chapter of the American Rhododendron Society
Princeton Chapter of the American Rhododendron Society
Rhododendron Society of Canada, Niagara Region
Scottish Rhododendron Society
Seattle Rhododendron Society
Valley Forge Chapter of the American Rhododendron Society
Vancouver Rhododendron Society
Victoria Rhododendron Society
Whidbey Island Chapter of the American Rhododendron Society
William Bartram Chapter of the American Rhododendron Society
Azalea Society of America
Azalea Society of America Lake Michigan Chapter
Azalea Society of America Louisiana Chapter
Meerkerk Rhododendron Gardens