Black Knight' is a vigorous large deciduous shrub to 3m, with somewhat arching growth and lance-shaped leaves, whitish beneath. Flowers scented, deep purple, in elongated panicles at tips of current year's growth Growing Details Genus: Buddleia Species: Davidii Cultivar: 'Black Knight' Skill Level: Beginner Exposure: Partial shade, Shade Hardiness: Hardy Soil type: Well-drained/light, Dry, Moist Height: 300cm Spread: 300cm Description Buddleja can be evergreen or deciduous shrubs, occasionally trees or scrambling climbers with simple leaves and panicles of small, tubular fragrant flowers.Flowers scented, striking white, in elongated panicles at tips of current year's growth