Plant Library

Butterfly Bush Blue Knight

Common Name: Butterfly Bush

Botanical Name: Buddleia

Variety: Blue Knight

Blossom Color: Blue/Purple

Bloom Time: Aug-Sep

Zone: 5 to 10

Exposure: Sun

Mature Height: 3.5-4'

Mature Width: 6-6.5'

Notes: ‘Blue Knight’ forms a dense clump of minty green leaves. Incredibly long, 10-12”, outward-facing flower panicles open light lavender purple and deepen to blue-purple with age. The new and the aged flowers appear on the panicles at the same time, giving the flower an interesting two-tone effect. This plant has incredible flower coverage, giving you quite the performance when it starts its first flush of blooms in late summer.