blue `carpatian bellflower` - campanula carpatica

american arboretum bell bellflower bloom blossom blue bluebell botanical botany campanula campanulaceae carpathia carpathian carpatian carpatica clips cochleariifolia cultivar europe flora flower gallen garden glockenblume green hare harebell herbaceous karpaten leaf mountains natural nature ornamental perennial petal piperi plant purple saint swiss switzerland tussock violet