Rhododendron Hardiness Study
The Massachusetts Chapter's Rhododendron Hardiness Study provides chapter members the opportunity to participate in a long term study of the hardiness of the rhododendron cultivars being grown in New England. The USDA has established hardiness zones based on average low temperatures.
All the participants in the study from 1982-1996 are listed below and were given the hardiness information collected.
Dean B Barber Contoocook, NH
For more information contact the Hardiness Program Manager