Arborescens. Large, interesting, dark pinky-rose blooms that age over the summer to green. This hydrangea is a rebloomer so if you prune off spent blooms, the plant will produce additional blooms and extend the amount of color in your garden onto the first hard frost.  The wholesale producer of this hydrangea is Proven Winners which donates $1 from every sale to the Breast Cancer Research Foundation. They have donated +$1 million so far and continue their contributions to such very critical, life-saving research. No mail order on hydrangeas. Photo courtesy of Proven Winners.