Peppermint is a hybrid perennial plant native to Europe that is now naturalized in North America. It grows 1-3 feet tall with dark green leaves and purple flowers, and prefers moist soil and a wet climate. Peppermint has been used for thousands of years in medicines and other products due to its menthol content, which provides soothing effects for issues like coughs, colds, headaches, nausea, and itching.