Nicknamed the 'Obediant Plant', physostegia are native to North America (United States, Canada, northern Mexico). They are erect (hence their nickname) rhizomatous herbaceous perennials 

inhabiting damp, sunny places. They grow up to 2 m (7 ft) tall with purple or pink tubular flowers in  summer.

Rose bouquet is a shorter form, growing to 75cm tall and producing pale, lilac-pink, tubular flowers held in short, upright spikes; the flowers are good for cutting.