Butterfly bush (Buddleja davidii)

Butterfly bush (Buddleja davidii)
Image courtesy Tom Forney
Butterfly bush (Buddleja davidii)
Image courtesy Glenn Miller
Butterfly bush (Buddleja davidii)
Image courtesy Glenn Miller
EDRR Species?: 
No

Other common names
Summer lilac

Description
Perennial shrub, flowers mid to late summer. Grows up to 10 feet tall. Leaves are narrow, opposite and green to blue-gray. Flower heads are lilac-like but come to a more definite point. Flowers are small and purple.

Impacts
This plant is a pioneering species that dominates open habitats. It poses an ecological threat to dryland meadows, open slopes and dunes, dominating these sites as much as Scotch broom has historically. It also invades reforested sites, resulting in a loss of forest productivity.