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Prairie Loosestrife

Lysimachia quadriflora

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Category
Forb / Wildflower
Sun
Full to Partial
Soil moisture
Wet to Medium
Bloom time
Jul–Aug
Bloom color
Yellow
Notes
Rhizomatous

About Prairie Loosestrife

Prairie Loosestrife is a refined and slender wildflower that brings a touch of gold to high-quality, undisturbed prairie wetlands. Reaching 1 to 2 feet in height, this perennial features very narrow, linear leaves that give the plant a delicate, airy appearance. In July and August, it produces bright yellow flowers with pointed petals, often appearing in small clusters at the ends of its stems. These blossoms are a critical source of floral oils for specialist Macropis bees, making the plant a cornerstone of local pollinator networks. Native to calcareous fens, wet prairies, and marshes, Prairie Loosestrife is an indicator of healthy, intact ecosystems. It thrives in full to partial sun and requires consistently moist to wet soils, particularly favoring those with a higher pH. Because it is less aggressive than some of its rhizomatous cousins, it is well-suited for smaller rain gardens or specialized wetland plantings where it can be appreciated up close. Its presence in a landscape signifies a commitment to preserving the delicate balance of our native prairie heritage.

Native range

Native to 23 states:

AlabamaArkansasD.C.GeorgiaIowaIllinoisIndianaKentuckyMassachusettsMarylandMichiganMinnesotaMissouriNorth CarolinaNorth DakotaNew YorkOhioOklahomaPennsylvaniaSouth DakotaVirginiaWisconsinWest Virginia

County range map

BONAP county-level native range map for Lysimachia quadriflora

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

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