Plant Calculator
Enter the approximate length and width of the area you will be planting and click 'Calculate' to determine how many Buddleia davidii 'Black Knight' you will need.
*Correct and successful spacing is complex and depends on project conditions.
Buddleia davidii 'Black Knight'
Butterfly Bush
- Season-long flowers attract a variety of wildlife
- Silvery green leaves from spring to fall
- Vigorous grower for sunny spots
- Category: Shrubs
- Hardiness Zone: 5-9
- Height: 6-9 ft
- Spread: 6-9 ft
Exposure
| • | Full Sun |
Soil Moisture
| • | Average Water |
Attributes
| • | Blooms all Season |
| • | Border or Bed |
| • | Cut Flower/Foliage |
| • | Drought Tolerant |
| • | Fast Growing |
| • | Fragrant |
| • | Heat Tolerant |
| • | Long Blooming |
| • | Low Maintenance |
Habit
| • | Upright |
Season of Interest (Foliage)
| • | Summer |
Growing & Maintenance Tips for Buddleia davidii 'Black Knight'
Mulch to winter protect in cold climates. Prune back early each spring for best display and compact growth. Breaks dormancy late so be patient for new spring growth. Soil must be well drained. Remove spent blooms for more flowers.