Three years ago I purchased two Hydranga bushes. As of now they still do not flower. Am I doing something wrong. I have tried to cut baack in the fall and the next year I didn’t cut them back but still no flowers.
How you prune a hydrangea to get blooms depends on what kind of Hydrangea it is. HERE’S A GREAT SITE that can help you figure out what you have and how to prune it.
Also, if it is Nikko Blue Hydrangea, it blooms on second year growth. In or USDA zone, the branches or canes die over the winter on Nikko Blue. The roots live so new canes grow each year but won’t produce flower. Bottom line, Nikko Blue can survive here in Zone 5 but will never flower.