Also known as the large campanula and the wide-leaved bellflower, used widely as an ornamental plant. Grows easily even in partial to full shade. Seeds freely to become naturalised and can spread by rhizomes. Wait until the seed heads are dark brown and then open them and spread the seed around. Withstands drought quite well.
Often this species needs to be planted just before the frost or needs a long period of cold for Stratification, so its seed dormancy can be overcome.