Campanula punctata ‘Pink Chimes’ – This Dwarf Spotted Bellflower features pendant 2″ long flowers of a pale cherry pink (with reddish-purple spotting inside) that emerge from pleated buds from early to mid summer. It repeat blooms well if deadheaded and makes a good container specimen. Spreads by creeping rhizomes. Grows 12-16″ high by 24″+ wide. Z3.
Campanula latifolia var. macrantha – The Wide-Leaved Bellflower is a very showy border perennial with tall spires (from June to August) of deep purplish-blue trumpet-shaped blooms. Deadhead to prolong the flower display and prevent self-seeding. Looks great when combined with Goat’s Beard or Aruncus dioicus. Grows 3 to 4′ high and 2 to 3′ wide. Hardy to zone 3.
Campanula persicifolia ‘Alba’ (syn. var. alba, ‘Grandiflora Alba’) – A classic herbaceous garden perennial with erect stems (may need to be staked in fertile soils) of pure white, cup-shaped flowers from June to July. The Peachleaf Bellflower spreads somewhat, forming a groundcover over time and makes an excellent cut flower. Grows 30″ high by 18″+ wide. Zone 3.
Campanula glomerata var. acaulis – This Dwarf Clustered Bellflower forms a low tuft of green leaves and explodes from early to mid summer with short stems of heavily clustered purplish-blue trumpet shaped blooms just over the foliage. It does spread somewhat, so you will need to keep it a distance from fine textured perennials. Grows 8-12″ high by 24″ wide. Zone 3.
Campanula punctata ‘Pink Octopus’ – A Terra Nova introduction with unusual flowers that much resemble a Japanese lantern in bud and open to bizarre (octopus-like) stringy petals (pinkish-white with spotting) that recurve slightly, like a tentacle. It prefers part to full sun, makes an excellent container specimen and should be deadheaded. Grows 18″ high by 15-18″ wide. Hardy to zone 3.