Pruning hydrangeas

Question

Do you leave the leaves on when pruning?

Answer 1

If your dead heading or just removing the spent flowers, yes; the leaves would remain on the rest of the plant.
Actual pruning is removing the stems and leaves on stems.
Here is an article with more information.

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