Sideritis syriaca's a herb that's used to prevent and fight the common cold. It grows in the Eastern Mediterranean, specifically the Balkans. Sideritis's known as Mountain Tea, Ironwort, Sheperd's Tea, or Pirin Tea. These plants are wild, hardy flowering perennials that've adapted to survive with little water and little soil. This species of Sideritis thrives on rocky slopes and pastures at elevations over 3000 feet. The plant grows in abundance at the foot of Mount Olympus in Greece, where it… (More on Sideritis)