Pink/Blue/Purple Hydrangeas for zone 4b
I've got a place in western Maine (near North Conway, NH) that seems to have the perfect conditions for Hydrangeas (dappled sun, lots of moisture, etc.). The only issue is cold; in January the low is about 0 every night and there is always a 1-2 week cold snap where the lows are 10-20 below.
Any suggestions, I have Merit, Nikko Blue, Maracantha an Endless Summer at my reg. house on Long Island.