Campanula portenschlagianaSynonym(s): Campanula muralis Common Name: 'Wall bellflower'
AGM. This vigorous, free-flowering campanula forms evergreen mats and is covered in innumerable deep purple flowers in mid-summer. May-Aug. H15cm S45cm.
Easy to grow in most soils in sun or part shade. Avoid using it in all but the largest of rock gardens as it can overpower other smaller growing species. It is excellent for growing along the base of a wall or between the crevices in paving.