Mints As Weeds
Many species in the mint family are grown in gardens and in agriculture, and these have been transported around the world for cultivation in suitable climates. In some cases, these species have escaped from cultivation and have become minor weeds of agriculture, lawns, and disturbed areas. Examples of such weeds in North America include catnip, ground-ivy (Glechoma hederacea), heal-all (Prunella vulgaris), hemp-nettle (Galeopsis tetrahit), henbit (Lamium amplexicaule), and motherwort (Leonurus cardiaca).
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Klein, R.M. The Green World: An Introduction to Plants and People. New York: Harper and Row, 1987.
Woodland, D. W. Contemporary Plant Systematics. 3rd ed. Berrien Springs, MI: Andrews University Press, 1999.