Light pruning produces smaller flowers compared to a deep prune. However, you will have a lot of flowers. Trim below each dead flowerhead.

A medium prune will give the shrub a natural but manicured look. You will achieve medium sized flowers. For good-sized, self-supporting flowers, you’ll trim all your hydrangea stems to about 15-18” inches above the ground height.

Deep pruning can encourage bigger, most plump flowerheads. This is the most effective option for getting the best out of your hydrangea plant and will encourage plants to stay better shaped and a little more compact. With a hard prune, you need to be brave and cut your hydrangeas to around 6-8” above the ground height. Deep pruning can also limit the amount of flowers you will have.