Buddleja davidii 'Black Knight' (Butterfly bush, sage)

Fast-growing, arching shrub that bears dense clusters of fragrant, dark violet-purple flowers from midsummer to autumn. Other hybrids and varieties include: B. davidii ‘Charming’, another fast-growing shrub, has lilac-pink flowers in spring and summer; it grows to 1.5m. ‘Empire Blue’ is similar, producing violet-blue blooms with an orange centre in summer. ‘Royal Red’ is taller, reaching to 2m, and bearing mauve-red trusses of flowers. ‘White Cloud’ grows to 3m and bears showy, fragrant, white flowers.

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Botanical Pronunciation: BUD-lee-a da-VID-i