Location: Both have been naturalized to the USA shores and can be found coast to coast with the exception of an area between central Montana
and northwestern Minnesota, engulfing all of North Dakota and upper part of South Dakota.
Parts Used: The seeds which are encapsulated in the pods contains the volatile oils. I consider the tincture of the entire plant, including the leaves, of use in formulating
liniments, washes, and poultices.
Medicinal Uses: An irritant, stimulant, tonic, appetite stimulant, diuretic, and emetic as described
by M Grieve in her 1931 text, A Modern Herbal. The mustards have a long history in Herbal medicine being utilized in poultices and plasters. Counterirritation is most likely the mechanism which
brings relieve when mustard is applied to deep seated congestions and pain. Hot water washes using the bruised seedpods have long been useful as medicinal body bathes. American Indians were said to
bruise the mustard leave for a toothache and headache remedy. The mustard plant can be infused into various oils or lard to produce a counterirritant salve for external applications.