Delicate bell-shaped flowers in soft blue-purple tones make Campanula rotundifolia a charming addition to garden borders and rock walls, where it may self-seed a little bit without ever becoming a 'weed' problem. This low-growing perennial thrives in well-drained soil and, once established, produces many arching stems of drooping blooms. Flowering stems have slender foliage that really showcase its elegant flowers. Hardy and undemanding, it grows well in either full or partial sun.