Mentha arvensis

Mentha arvensis, the corn mint, field mint, or wild mint, is a species of flowering plant in the mint family Lamiaceae. It has a circumboreal distribution, being native to the temperate regions of Europe and western and central Asia, east to the Himalaya and eastern Siberia, and North America. Mentha canadensis, the related species, is also included in Mentha arvensis by some authors as two varieties, M. arvensis var. glabrata Fernald (North American plants such as American Wild Mint) and M. arvensis var. piperascens Malinv. ex L. H. Bailey (eastern Asian plants such as Japanese mint). It grows in moist places, especially along streams....read more on Wikipedia.