The coptis rhizome Cortex

Huang Lianxi is cool, moist, shady, and avoids high temperatures and drought. Generally distributed in high mountain areas of 1200 to 1800m, it requires natural environment with low temperature and high air humidity. Can not withstand strong sunlight, like the weak light, so it needs shade.

Shallow roots, distributed in 5 ~ 10cm soil layer, suitable for topsoil loose and fertile, rich humus, soil deep soil, pH5.5 ~ 6.5, slightly acidic. In the shade of alpine mountains, between 1,500 and 2,300 meters above sea level, wild or sometimes cultivated.