Recently I learned of a newly discovered deciduous azalea native to Georgia and Alabama called the Red Hills Azalea. Rhododendron colemanii 'Red Hills' is a wild azalea that grows in the Red Hills region of South Alabama and eastward barely into Georgia along the Chattahoochee River. This newly discovered species is one of the tallest, most richly colored, and most fragrant of all the native azaleas. The late blooming flowers (usually May) can be any color from pure white to deep pink or even yellow or orange.
Red Hills azalea seems to prefer cooler bottomlands near creeks and streams. I'd suggest siting this plant in the shade of tall hardwoods and providing regular water.
If you're looking to add to your collection of rare native azaleas, you'll want to check out this one. To purchase this plant, click here.