Osha is a perennial herb native to North America, commonly found in moist woodlands and stream banks. Its scientific name is Ligusticum porteri and it is also known as bear root or Colorado cough root. Osha has been used for centuries by various Native American tribes for its medicinal properties, particularly as a treatment for respiratory ailments such as coughs and colds. The root of the plant is typically harvested and dried for use in teas, tinctures, and poultices. Osha is known for its strong, pungent odor and flavor, which is said to help clear congestion and promote overall respiratory health.