American mountain mint or hairy mountain mint is an herbaceous perennial in the Lamiaceae (mint) family. Its common names are derived from the mint fragrance emitted from the leaves.

It is native to the middle United States, where its natural habitat includes rocky slopes, outcrops, along railroad tracks, open woods, stream valleys and thickets. Grow in full sun to part shade with protection from hot summer sun.

Has very densely hairy leaves and stems, giving it a fuzzy texture. The leaves will emit its minty fragrance when brushed against or crushed. When dried, it makes an excellent potpourri.

Its spreading by rhizomes can be kept in bay by cutting back the roots in the spring.

Host plant for the Wavy-lined EmeraldMoth and the Gray Hairstreak butterfly .