• American Rhododendron Society
• Eugene Chapter
• Noyo Chapter
• Portland Chapter
• Siuslaw Chapter
• California Chapter (East Bay) http://www.calchapterars.org/
• Willamette Chapter (Salem Oregon) http://www.arswillamette.com/
• Tualatin Chapter (South of Portland) http://tualatinvalleyars.org/tualatinvalleyars.org/Welcome.html
• De Anza Chapter (Mt. View/ Peninsula) http://www.deanza-ars.com/

Other Organizations

• Azalea Society
• Rhododendron Species Foundation & Botanical Garden

Favorite Gardens to Explore

• Humboldt Botanical Garden – Eureka, CA
• Mendocino Coast Botanical Gardens – Fort Bragg, CA
• Oregon Garden – Silverton, OR
• Quarryhill Botanical Garden – Glen Ellen, CA
• Rhododendron Species Botanical Garden – Federal Way, WA
• Strybing Arboretum in Golden Gate Park – San Francisco, CA

Interesting Articles

• About Rhododendrons – on the Rhododendron Species Botanical Garden website

This list is in progress…more are being added regularly