Another insteresting silverback Hydrangea RadiataRichard Bir, a retired horticulturist and frequent hydrangea researcher from North Carolina, shared this form of the native smooth leafed hydrangea. It was originally found in upstate South Carolina by Clarence Towe. It is perhaps the most sterile (and possibly double/triple) form of Arborescens Radiata. We have very limited supplies of this plant.