Peppermint (Mentha piperta) is a hybrid from spearmint and watermint that has been around for 300 odd years. It is now one of the most popular tea herbs in the world, for its refreashing-ness and digestive properties. Peppermint grows in a wide range of sites but will grow best in full sun and good drainage. Spreads like other mints but is not as tolerant of water logged situations.