If your hydrangeas live in the milder parts of the U.S. and Europe, and the spirit moves you, you can consider pruning your new wood blooming hydrangeas now. It's hard to conceive of that when you live where I do. Last March we had 3 Nor’easters. Not only did they bury everything, but the snow and ice made the footing much too dangerous to be using sharp tools. On the other hand, we have had an extremely mild February and early March looks to be the same. Exactly which plants am I talking about? The ones that are foolproof and will produce flowers on the stems they will grow this year.