Campanula carpatica

Campanula carpatica, the tussock bellflower or Carpathian harebell, is a species of flowering plant in the family Campanulaceae, native to the Carpathian Mountains of Central Europe. It is a low-growing herbaceous perennial, with long stems bearing solitary blue bell-shaped flowers. It was introduced to the Royal Botanic Garden at Kew in 1774 by Nikolaus Joseph von Jacquin. Several cultivars in shades of white, blue, pink and purple, have been developed for garden use.