I contacted the local extention service and assked why mine didn't bloom and he said to surround it with a wind barrier (what ever they make potato sacks out of) for the winter. I did and it has bloomed like mad this year. He says the cold wind in winter really saps all of its strength
Washington post article: Hydrangeas for dummies
Chapel Hill NC, The university with a Dr. Dirr has developed a plant called a rebloomer that blooms on this years growth. It was found originally in a nursery in the mid west. They come in several types, mopheads, minatures, oakleaf with names like Penny Mac, Oak Hill, Decatur Blue, endless summer. They will be releasing 2 million plants in the spring
www.endlesssummerblooms.com
www.mccorklenurseries.com
www.canr.org
www.hydrangeashydrangeas.com
I am the ORGANIC guy now! way cool