Should One Cut Back Tall Stalks Of Hydrangeas, Or Do They Have Buds On Them?

Question

small new leaves are at bottom of stalks.

Answer 1

Pruning of Hydrangeas is determined by the type:

https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/prune-hydrangea-bushes-hydrangea-pruning-instructions.htm