Tips for Growing Gorgeous Hydrangeas By: SAL VAGLICA, This Old House magazine: Reblooming Hydrangeas: Q. What's the story with reblooming hydrangeas? A: One way to guard against the vagaries of mistakenly cutting off buds or losing them to a cold snap is to grow some of the newer reblooming hybrids. These have become staples at home centers since their first introduction, in 2004. Some to consider are 'Endless Summer,' a blue mophead, and 'Twist and Shout,' a pink to blue lacecap (go to Endl...