Midewin National Tallgrass Prairie
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  • Mountain Mint

    SCIENTIFIC NAME: Pycnanthemum virginianum

    COMMON NAME: Common Mountain Mint, Mountain Mint, Virginia Mountain Mint, Mountain Thyme, Pennyroyal, & Prairie Hyssop

    BLOOM TIME: June, July, Aug, Sept


    • Aromatic mint with square hairy stems 3 ft. tall.
    • Narrow painted leaves 2” long, ¼” wide with flower heads densely packed with small purple spotted flowers.
    • Habitat: prairies, pastures, roadsides.
    • Native Americans baited mink traps with mint.
    • Natives Americans also used as a tea for treating rundown conditions.


    • Many insects are strongly attracted to the flowers, including various bees, wasps, flies, small butterflies, and beetles.
    • Mammals and many leaf-chewing insects apparently find the mint fragrance of the leaves and stems repugnant, and rarely bother this plant.