Campanula Muralis is one of the most beautiful low growing perennials that spreads moderately fast. Their foliage is long, heart-shaped, irregularly toothed, and slightly hairy. It grows 1 to 3 1/2 inches long and 3/4 to 3 inches wide. The Campanula Muralis has beautiful star-shaped lilac flowers. It is fast spreading, many branched, leafy with semi-upright flowering stems that are typically 1 foot or taller. Campanula are commonly known as Bellflowers.