Caryopteris x clandonensis 'Blue Knoll'
Blue Mist Spirea, Bluebeard
Family: Verbenaceae Vervain
| Type | Shrub |
| USDA Hardiness range | 6A - 9B |
| Exposure | Partial shade to full sun |
| Bloom color | Blue |
| Bloom time | Summer and Fall |
| Water needs | Moist |
| Landscape uses | Alpine garden, border, container, ground cover, massing, rock garden |
| Height | 24" to 36" / 60cm to 90cm |
| Spread | 24" to 36" / 60cm to 90cm |
| Growth rate | Moderate |
| Persistence | Deciduous |
| Leaf color | Green, silvery |
| Fruit color | n/a |
| Soil pH requirements | Acidic, neutral, slightly alkaline |
| Soil type | Sandy, clay, loamy |
| Form | Rounded |