Dick Bir, retired horticulturist in North Carolina, shared this form of the native smooth hydrangea that was found in upstate South Carolina by Clarence Towe. Hydrangea arborescens subsp. radiata ’Terry Greer’ is a mostly sterile double-flowered form of the silverback subspecies. The bloom is white akin to the mophead form of the widely known ’Annabelle’ with silvery undersides of the leaves as an added attraction. Like all the selections of the subspecies radiata it is unhappy in the hotter day & night temperatures of the warmer zones and requires sharp drainage to be happy. Lovely plant but picky. Height to 4 feet. Zones 5-6(7). We’re marginally zone 8 now and have a hard time keeping it happy.
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