Not everywhere. If your hydrangeas live in warm parts of the U.S. and Europe , and the spirit moves you, you can consider pruning your new wood bloo ming hydrangeas now . It's hard to conceive of that when you live where I do as we stare down yet another frigid blast of cold air over the next few days. But for those gardeners in places like Arkansas , Atlanta , and parts of the UK , your new wood bloo mers can be cut back now .