Original : A herb which keeps growing from year to year. It has rhizomes or underground stems. The above ground stems are erect, or creeping and 1 m high. There are many branches. The branches are white with lines along them. The leaf blade is oval to oblong and 6 cm long by 1.5 cm wide. The leaves have teeth along the edge. The flowers are in spikes 3-8 cm long. They are purplish{{{0(+x).
Original : It is a temperate plant. In China it is grown in some cities. It grows in damp locations. It can grow in light shade. It can grow in arid places. It suits hardiness zones 6-9{{{0(+x).