Buddleja davidii 'Black Knight' | Butterfly BushA large, vigorous, deciduous shrub with a bushy habit Dark purple panicles of scented flowers on arching branches, amongst lance shaped grey green leaves Plant in a sunny border and watch the butterflies flock to your garden Grows to around 5m x 3m A fully hardy, low maintenance perennial plant Fast growing and drought resistant once established Winner of the RHS Award of Garden Merit and Plants for Pollinators designation