Diseases of Rhododendron (Rhododendron spp.)

Early Flowering Rhododendrons

Growing Azaleas and Rhododendrons - University of Missouri

Azaleas as Bonsai

Azaleas and Rhododendrons for Minnesota Michael Zins Assistant Professor, University of Minnesota Landscape Arboretum

Fraser South Rhododendron Society - "All about rhodos and azaleas by the Hennings: great place for general information on these plants for the general or novice gardener."

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.

Henning's Azaleas

The American Rododendron Society

Virtual Rhododendron Garden - contains many photographs

Niagara Region Rhododendron Society of Canada

Vancouver Rhododendron Society, ARS

Massachusetts Chapter, ARS

Gardens
The Anderson GardenAn 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 TrustNew Zealand.
Royal Botanic Gardens, Kew Surrey, United Kingdom.

Rhododendron Species Foundation and Botanical Garden