A Hydrangea arborescens.The next step from the much loved giant blooms of creamy white Annabelle. Incrediball Blush has massive silvery-pink blooms on very strong stems.  Hardy in the Zone 3 portions of North America without question. Matures in the five foot range but trim as you wish. Excellent used as a backdrop against a fence or along a driveway. Photo courtesy of Proven Winners.