Blue Boa' produces long, full and sumptuous deep violet-blue flower spikes all summer and fall that are held over deep green fragrant foliage that forms a compact plant.
| Perennial | |
| Agastache | |
| Anise Hyssop | |
| Zone 5 | |
| 6+ hours | |
| Dry, Moist, Sandy | |
| Plant with Echinacea and Campanula | |
| Combine with Achillea and Grasses | |
| 24-30" | |
| 18-32" | |
| Fall, Summer | |
| Purple | |
| Rapid | |
| Upright | |
| Flower-tone | |
| Yes | |
| Yes | |
| Yes | |
| Yes | |
| Echinacea, Campanula, Achillea, Grasses |