Answer: There are hydrangea's which bloom on (current season) new wood and hydrangeas that bloom on new shoots which develop on old wood. If the non-blooming hydrangea freezes down to ground level each winter, and if it's the type that blooms on new shoots which develop on old wood, it may never bloom for you. In that case, I'd replace it with one that produces blooms on the current season's growth. All Summer Beauty would be a good choice for your gardening region.
Best wishes with your landscape!
Q&A Library Searching Tips