Rhododendron ( Welmet Robin Hill Hybrid Azalea )
The Robin Hill Hybrids , developed by Robert Gartrell in New Jersey , were bred to be hardy , late - flower evergreen azaleas with large , gaudy flowers like to those of the Satsuki Hybrids . Their intermediate size make them ideal for the front of the border or smaller gardens . Though azaleas have a potentially large lean of possible pestilence and disease problems , they are usually hassle free if plant correctly in proper cultural conditions ....