Vietnam. Cardamom is born in wet places such as mountains, roadsides and grasslands. Vietnamese cardamom is of high quality, and China mainly imports it. Amomum villosum, alias Polygonum multiflorum Thunb, Amomum villosum, Amomum villosum, is the fruit of Amomum villosum, a perennial herb of Zingiberaceae. The fruit is yellow-green in June, 5438+00- 12. It is taken before it is broken, and the remaining fruit stalk is removed and dried for medicinal purposes.