Where can I buy calamus?

Acorus calamus has been purchased in Luoping County. Acorus calamus, also known as white Acorus calamus and Tibetan Acorus calamus, is a perennial herb with strong roots. Basal leaves are sword-shaped, with prominent midvein, basal leaf sheaths folded and membranous edges. Born in swamps, streams or rice fields. Acorus calamus can extract aromatic oil, which is fragrant. On the Dragon Boat Festival, there is a custom of tying calamus leaves and wormwood together and inserting them under the eaves. Rootstocks can be used as spices. Also known as Yaojiu. The poisonous plants listed in China Botanical Atlas Database are poisonous to the whole plant, and the rhizome is more toxic. Native to China and Japan, distributed in north temperate zone. Therefore, Acorus calamus was obtained in Luoping County.