Hello, beaniebeagle. Some good ones are A Sandy Rhododendron in Oregon and Carlson's Gardens in New York. Both have an excellent rating by Garden Watchdog.

You can also check the American Rhododendron Society's Website and the Azalea Society of America's Website for more vendors.

Luis

Another reliable West coast source for well grown plants -

Here is a link that might be useful: Greer Gardens

I have bought from: http://harvestimenursery.com/

Here is a link that might be useful: Harves Time Nursery

thank you

Greer's in Eugene, Oregon, is perhaps the best but another good one is Rare Find Nursery in New Jersey, especially for East Coast customers.

Here is a link that might be useful: Rarefind Nursery in Jackson, NJ.