Cannova® Red Canna. Serbian Bellflower is an herbaceous perennial with a ground-hugging habit of growth. Blooming in shades of blue, purple, pink or white, Campanula (Bellflowers) are perfect for beds and borders, particularly in areas with cool summers. Rock gardens. See more ideas about Beautiful flowers, Planting flowers, Flower garden. Serbian bellflower can also be planted along the edge of a flower bed. To choose the right plants for pathways, consider each plant’s foot-traffic tolerance. The roots will reach deep into the wall to get moisture. Blue Waterfall Serbian Bellflower. Black Knight Canna. Blue Waterfall Serbian Bellflower. The two countries maintained diplomatic relations established by Australia and SFR Yugoslavia in 1966. The current Trulia Estimate for 49 Serbian Bellflower Trl is $187,395.