Labiatae Marrubium vulgare L.
Source: Magness et al. 1971
Horehound is an aromatic perennial herb, 1 to 3 feet in height, with hairy, ovate to near round leaves. It has escaped from gardens and become naturalized in many parts of the world, including the U.S. It was formerly much esteemed in cookery, but is now used mainly in candy, where it is believed to relieve tickling of the throat and coughing. Leaves and tender stems are extracted for use in candies. No data are available on commercial production in the U.S.