Buddleja Davidii Harlequin otherwise known as the Butterfly Bush is a fast-growing shrub with arching stems of striking variegated creamy white margined foliage, yellow-margined when young. Masses of fragrant panicles of dark purple-red flowers are produced in mid summer to early autumn. Max Height 3m. Max Spread 5m. Flowers May to August. Full sun. Hardy. Water thoroughly before planting.