Campanula Portenschlagiana are Dalmatian bellflowers and very popular perennials. This dwarf species is commonly grown in pots or tubs, although it can be used as an edging or in rock gardens.
These plants form a patch of spreading green leaves and bear a large quantity of violet blue bells in the early parts of summer. They are vigorous growers and should be kept away from delicate plants such as alpines that can become smothered. Dalmatian bellflowers work well as ground cover for smaller areas such as under shrub roses. They can be clipped after they have bloomed to maintain a compact and tidy appearance.