What are Perennial Herbs Perennial herbs are herbs that grow for more than one season. Many people favor growing perennial herbs because it is more convenient to plant an herb once unlike annual herbs that must be replanted every year. Perennial Herbs are Survivors Hardy perennial herbs can survive the winter weather and come back the next year. Tender perennial herbs are plants that might be able to survive a mild winter with added protection during extreme winter weather episodes.  Some ... Click here to read more