Description Buddleja davidii ‘Black Knight’ A vigorous, deciduous shrub with an upright, arching habit, forming a broad, airy framework of grey-green, lance-shaped foliage. Long, tapering panicles of richly coloured, deep velvety purple flowers are borne from July to September. Grow in well-drained soil in full sun. It will reach a height of 3-4m and a spread of 2-3m. Supplied Size 1 x Plant in 3 Litre Container (40-60cm)
