The butterfly bush is a wonderful addition to any garden with its purple cone-shaped flowers and honey scent. However there will come a time when the flowers start to fade, but should you deadhead ...

Deciduous shrub, around 3m in height, with oval, deeply toothed, leaves fragrant when young, and arching stems covered in dense, white felt. Racemes of fragrant, small, pale lavender-pink flowers, ...

Deciduous shrub, around 3m in height, with oval, deeply toothed, leaves fragrant when young, and arching stems covered in dense, white felt. Racemes of fragrant, small, pale lavender-pink flowers, ...

Division of Pharmacognosy, Department of Pharmaceutical Sciences, Faculty of Life Sciences, University of Vienna, Josef-Holaubek-Platz 2, 1090 Vienna, Austria ...