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Water Horehound

Lycopus americanus

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Category
Forb / Wildflower
Sun
Full to Partial
Soil moisture
Wet to Medium-Wet
Bloom time
Jul–Sep
Bloom color
White
Notes
Rhizomatous

About Water Horehound

Water Horehound is a resilient and understated member of the mint family that excels in stabilizing wet, riparian environments. Reaching heights of 1 to 3 feet, this perennial features sharply toothed, deeply lobed lower leaves and produces tiny, white flower clusters tucked into the leaf axils from July through September. These delicate blossoms provide a late-season feast for small native bees and beneficial flies. Native across nearly all of North America, Water Horehound is a staple of wet meadows, marshes, and pond shorelines. It thrives in full to partial sun and requires consistently moist to saturated soils, spreading via rhizomes to form a helpful groundcover in soggy areas. Unlike many other mints, it lacks a strong aroma but makes up for it with its rugged dependability in challenging wetland sites. It is an excellent choice for naturalizing shoreline edges where it can help prevent erosion while providing essential habitat for moisture-loving wildlife.

Native range

Native to 48 states:

AlabamaArkansasArizonaCaliforniaColoradoConnecticutD.C.DelawareFloridaGeorgiaIowaIdahoIllinoisIndianaKansasKentuckyLouisianaMassachusettsMarylandMaineMichiganMinnesotaMissouriMississippiMontanaNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew MexicoNew YorkOhioOklahomaOregonPennsylvaniaRhode IslandSouth CarolinaSouth DakotaTennesseeTexasUtahVirginiaVermontWashingtonWisconsinWest VirginiaWyoming

County range map

BONAP county-level native range map for Lycopus americanus

Range map courtesy of BONAP (Biota of North America Program).

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