Thumbell Blue features delicate, nodding blue bell-shaped flowers held on fine, wiry stems above low, tidy foliage. This charming, long-blooming perennial brings a soft, natural look to borders, rock gardens, and cottage-style plantings.
| Perennial | |
| Campanula | |
| Bellflower | |
| Zone 3 | |
| 4-6+ hours | |
| Well-drained soil | |
| Rock and heather gardens | |
| Along garden edges and walkways | |
| 12-18" | |
| 12-18" | |
| Summer | |
| Blue, Purple | |
| 1" | |
| Rapid | |
| Low, Upright | |
| Plant-tone | |
| Yes | |
| Yes | |
| Yes | |
| Yes | |
| Yes | |
| Nepeta, Coreopsis, Salvia, Geranium |