I have planted (5-years) several plants, which haven't bloomed since the first year. I have been very careful not to prune or do anything to disturb the buds. I have removed dead, dry, branches before August. I have not covered my plants during the winter season and I live between Zones 5/6, in suburban Pittsburgh, Pa. The leaves on my plants are just beautiful, very healthy looking. These plants are all of the mophead type. Can you please share some advice with me?
Mophead Hydrangea Not Blooming
Certified GKH Gardening Expert
I would start with adding some fertilizer. Make sure it is a lower nitrogen fertilizer, as too much nitrogen can keep blossoms from occurring. I would also recommend taking steps to winterize your hydrangea (https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/hydrangea-winter-care-how-to-protect-hydrangeas-from-winter-cold-and-wind.htm).
If you have not already read this article, you will also find it helpful: https://www.gardeningknowhow.com/ornamental/shrubs/hydrangea/hydrangea-not-blooming.htm