Osha grows up to 3 feet (1 meter) tall and has small, bright green leaves that look like parsley. It can also be identified by its small white flowers and wrinkled, dark brown roots. Also known as ...

Osha root (Ligusticum porteri) is a perennial herb in the carrot and parsley family (Apiaceae/Umbelliferae). In traditional Native American and Hispanic medicine, osha has treated several upper ...