Caring for the Carpathian bellflower » watering, fertilizing and more Is the Carpathian bellflower drought tolerant or should it be watered? How much fertilizer is sufficient? Are Carpathian bluebells hardy or do you need to overwinter them? How do you prune these perennials? Help the development of the site, sharing the article with friends! Help the development of the site, sharing the article with friends! Category: Herbs