Hydrangea Farm Nursery say: Named for great British hydrangea expert Michael Haworth-Booth; brought our original cuttings from England many years ago, best true red colour draws immediate attention, best in morning sun and afternoon shade in our gardens, somewhat tender initially but well worth winter protecting.

Gardens found in the 10 surveyed in 2010:NAN

From the catalogue ofWilkersonMillGardens, PalmettoUSA

UK  Plant Finder 2012: Not listed.