Black Adder' features smoky lilac flowers that open from dark-purple buds. The blooms appear from June until the first frost over intoxicatingly fragrant gray-green foliage.
| Perennial | |
| Agastache | |
| Anise Hyssop | |
| Zone 5 | |
| 6+ hours | |
| Clay, Moist, Sandy | |
| Plant with Echinacea and Campanula | |
| Combine with Achillea and Grasses | |
| 36-48" | |
| 24-36" | |
| Fall, Summer | |
| Blue, Purple | |
| Rapid | |
| Plant-tone | |
| Yes | |
| Yes | |
| Yes | |
| Yes | |
| Yes | |
| Echinacea, Campanula, Achillea, Grasses |