Any information would be appreciated. Encore' is a part of a group of azaleas known as Back Acres Hybrids. They were an extension of the Glenn Dale Hybrids. Mr. Morrison moved these from Maryland to Mississippi. More than 500 crosses were made and 370 were selected for evaluation.
Flowers are equally heavy texture.
They are cold resistant in zone 7a, but the flowers may be damaged at that temperature. This is the registered plant by that name. Often times there are other plants in the trade using similar names. I have no personal knowledge. Thank you for coming to the American Rhododendron Society's alternate site, Rhododendron and Azalea News .