Q.Hydrangeas Not Blooming…why?
Hi, I planted three hydrangea bushes about six years ago. I live in zone four and they mostly get full sun. However, they have yet to bloom! The foliage is approximately 3 feet tall and very healthy looking but just wondering why I am not getting any blooms after all these years? I would appreciate any help!

Certified GKH Gardening Expert
Are your hydrangeas rated for zone 4? The buds could be getting zapped by a late freeze if your shrubs bloom on old wood (buds develop on last season's growth). Also, improper pruning can prevent blooms. Most often, people with the bigleaf hydrangea or mophead hydrangea have the most trouble with blooms.
Here are more ideas:
https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/hydrangea-not-blooming.htm