I have 2 hydrangea bushes with a tag that says it is a Mini Penny (TM) Hydrangea. 1. Do I prune these and cut them back to the ground? 2. One bush flowered great and the other one not so much. They are next to each other. Any suggestions?
These articles will help you:
https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/hydrangea-not-blooming.htm
https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/prune-hydrangea-bushes-hydrangea-pruning-instructions.htm