Buddleja davidii Plant - Black Knight An alluring and mysterious hardy shrub unlike any other butterfly bush, due to its deep plum purple shards of delicate blooms. These gothic blooms are sure to attract many of the pollinating insects to your garden, making this a fantastic choice for wildlife areas! Buddleja Dav Black Night is a nectar-rich and intensely fragrant buddleja that can reach a height of 200cm (78.7in) and a spread of 500cm (196.in) that will require minimal maintenance! Often used as screening or hedging, this summer flowering hardy shrub will provide endless arrays of colour from July through to the end of September!