Butterfly Bush
Buddleja davidii 'Black Knight'
Scrophulariaceae
Growth habit
Shrub
Perennation
Long-lived polycarpic perennial
Location
Urban Tree Collection, Hillside Garden
Source of plant
Bluebird Nursery Inc., Klyn Nurseries, Cayuga Landscape Company, Wayside Gardens, Crownsville Nursery, Windrose Nursery
Description
Flowers very dark purple; may be slightly hardier than other B. davidii clones. Flowering season July untilfrost (DS 9). Flowers purple-black on a vigorous plant; heavy bloomer (DS 163).
USDA Hardiness Zone
5
Special characteristics
flowering season