Cent. & W. Asia, S. Europe, N. Africa, Canary Islands, Azores; Naturalized in N. America
Leaves contain marrubine, a very effective expectorant. Horehound tea and cough drops have been a long standing folk remedy for coughs and colds.
Source of plant
Pinetree Garden Seeds, Fedco Seeds, Sunnybrook Farms Nursery, W. Atlee Burpee & Company, Companion Plants, Baker's Acres
To 18" in height; leaves white-pubescent, broadly round-ovate, to nearly 2" long, crenate, petioled;verticillasters globose, calyx with 10 recurved teeth, the alternate ones shorter, corolla small, white.
USDA Hardiness Zone
foliage characteristics, medicinal/pharmaceutical