Bellflower Zone 7. Slender erect leafy stems rise 23 feet high in summer in loose spires of open cup-shaped inch-wide blossoms of blue pink or white. Adriatic bellflower or sometimes also called Italian bellflower is a very attractive ground-covering mound-forming perennial with star-shaped light to mid blue-violet flowers.
To -233 C -10 F USDA Zone 6b. To -372 C -35 F USDA Zone 4a. Resembling bellflowers Campanula they open from large plump balloon-like buds which almost beg to.
A native of New Zealand this plant grows to 2 inches high and forms a creeping weed-proof mat.
They are cold-hardy plants that are useful specimens in areas with hard winters. Ideal for groundcovers mixed borders containers rock gardens. They require full sun for best flower production and well-drained soil with moderate moisture. Narrow basal leaves 48 inches long form a low clump to 112 feet wide.