Black Knight features stunning dark purple, almost black flowers. The 4-10" long fragrant purple panicles first appear in July and with deadheading can continue to bloom right up to frost. Best treated like a perennial with annual pruning.
- Secondary Name:
- Butterfly Bush
- Plant Type:
- Perennials
- Hardiness Zone:
- ZONE 5
- Native:
- Not Native
- Sun Exposure:
- SUN
- Ultimate Plant Height:
- HT 48-72"
- Ultimate Spread:
- SP 48-60"
Questions about our plant sizes and vocabulary? Learn more here.
At Horsford's we strive to grow the highest quality plant material and are happy to provide specific guarantees on plants purchased from our Garden Center. See our Plant Guarantee for complete details.
