NOTE: Horehound:  do not mistake for Black Horehound, Ballota nigra.  Black Horehound is toxic and is used medicinally (traditional medicine) to treat Ascaris (worm) infections. 

Horehound, Marrubium vulgare (Tourn.)  L..  I grow this plant in a pot so I can bring it in in the winter for fighting acute infections and therapy for PMS.  Other labiataes can share the bucket with the horehound.  (More)