Answer: Hydrangeas flower best when given about 4 hours of morning sunshine. It sounds as though you are providing enough winter protection but you didn't mention whether or not you routinely prune your plant back. If you prune it back by one third to one half each spring it should develop lots of new flowering shoots. Try pruning this spring and see if that makes a difference in its growth and flowering. If not you may want to move it to a more protected garden area so it doesn't spend so much time recovering from the winter weather and will be free to put that energy into healthy new growth and flowers. Best wishes with your hydrangea!
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