Empire Blue' is a large deciduous shrub with arching branches and lance-shaped leaves, white beneath. Flowers scented, violet-blue in elongated panicles at ends of current year's growth 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