Deliciously fragrant blooms of deep, velvety purple open on long 10" wands from midsummer to fall, attracting flocks of butterflies. 6-8' tall and wide, this plant is easy and foolproof to grow, despite heat, drought or poor soil. Plant in full sun or partial shade. Zones 4-9. Buddleia davidii 'Black Knight' Not available in OR. Deer tend to avoid.