Azaleas by Alabama Cooperative Extension
Azalea Works is an educational and research activity that was created in 1989 by William C. Miller III for the purposes of consulting and lecturing, plant research, the development of improved azalea cultivars, and the production and sale of educational materials (pamphlets and books) on azaleas and related companion plants.
Azaleas for Florida This is an excellent reference site for information on Azaleas and varieties .
Growing Azaleas from Mississippi State Extension Service
Henning's Azaleas
Rhododendron and Azalea News
The American Rododendron Society
Virtual Rhododendron Garden - contains many photographs
Helge's Rhododendron Page - collection of photos.
The American Rhododendron Society (Niagara 98) Convention
The American Rhododendron Society Homepage
The Danish Chapter, ARS
The Cascade Chapter, ARS
Fraser South Rhododendron Society, ARS
Vancouver Rhododendron Society, ARS
Portland Chapter, ARS
Massachusetts Chapter, ARS
The Rhododendron Page An on-line reference to the genus Rhododendron

Gardens
The Anderson Garden An internationally famous collection of 3,000 rhododendrons, including 150 species and 300 different hydrids. Site of the American Rhododendron Society conference tours in 1993 and 1999.
Meerkerk Rhododendron Gardens - Whidbey Island, Washington.
Norwegian Arboretum at Milde, Bergen, Norway. Produced by a member of the Danish chapter of the ARS.
Pukeiti Rhododendron Trust New Zealand.
Royal Botanic Gardens, Kew Surrey, United Kingdom.
Tyler Arboretum Media, Pennsylvania.
Crystal Springs Rhododendron Garden Portland, Oregon