Answer: Many people use hydrangea blooms in fresh and dried flower arrangements, so don't worry about cutting the flowers off the plant. Hydrangea's bloom only once a season, but the foliage will stay green until nipped by frost. The roots are hardy, though, so you'll get new shoots and stems each spring. It's beneficial to the plant to cut back the old, flowering shoots, and what you've done is just exactly what the plant needs.
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