Answer: Your Bailday hydrangea produces flowering shoots from old wood. So, pruning is important. Prune the old canes back to about 18" above ground level in the late winter or early spring. New shoots which develop from the old wood should flower for you. Hydrangeas prefer to grow in morning sun with afternoon shade. If your hydrangea is not getting a few hours of morning sun, this might cause it to grow lush and green, but not flower.
Best wishes with your hydrangea!
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