Midewin National Tallgrass Prairie
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  • Common Bugleweed

    SCIENTIFIC NAME: Lycopus americnus

    COMMON NAMES: Common Bugleweed, American Water Horehound, Water Horehound

    BLOOM TIME: July, Aug, Sept


    • Grows up to 40 in. tall & is sparingly branched.
    • The 3 in. leaves are spiked & opposite each other.
    • Flowers bloom where the leaves meet on the stem appearing purplish in bright sun.
    • Flowers are small with lobes in a tube shape.
    • This member of the mint family with a minty scent was used in folk remedies for cough, giving it the alternate name of “horehound”.
    • Habitat: partial to full sun in wet conditions.
    • Common plant in all Illinois counties.


    • A variety of insects visit the flowers, primarily for nectar, especially short-tongued bees, wasps, and flies.
    • Other floral visitors include long-tongued bees, butterflies, skippers, and beetles.
    • The caterpillars of the Hermit Sphinx feed on the foliage of this and other members of the Mint family.
    • Other insect feeders include aphids which feeds on the roots during the summer.
    • The leaves are bitter-tasting & not often eaten by mammalian herbivores.