Q.Limelight Hydrangeas
Hi, I had 5 Limelight Hydrangeas planted by a landscaping company this past spring. They have grown tall but haven’t bloomed yet. The stems are at least 4 foot tall and look healthy. I have searched for answers about what to do before Fall Winter. Do I prune them? And if so, how far down.Any advice would be greatly appreciated!!! Thank you, Michael

Certified GKH Gardening Expert
The Panicle Hydrangea will flower on current year's growth. This has me thinking that it is, simply, not established enough to bloom. Likely, you will have blooms next year. These articles will help with Hydrangea care.
https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/care-of-peegee-hydrangea-plants.htm
https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea