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Unbranched Bur Reed

Sparganium emersum

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Category
Forb / Wildflower
Sun
Full to Partial
Soil moisture
Wet
Bloom time
Jul–Aug

About Unbranched Bur Reed

Unbranched Bur Reed is a hardy and distinctive aquatic plant that brings a touch of wild beauty to the water's edge. Typically reaching heights of one to three feet, it features stiff, upright, triangular leaves that provide a strong vertical presence. During the summer months, it produces unique, ball-like flower clusters on an unbranched stem, with male flowers at the top and female flowers below. These develop into spiky, light green seed heads that eventually turn a rich brown, providing a striking visual detail. Native to the shallow waters of lakes, ponds, and slow-moving rivers, primarily in the northern and western United States, it is a vital component of healthy wetland ecosystems, offering food and shelter for aquatic life like ducks and muskrats. Unbranched Bur Reed is excellent for stabilizing muddy banks or for use in the shallow zones of a water garden. It thrives in full sun to partial shade and can tolerate water depths up to two feet, making it a resilient and valuable addition to any wetland planting.

Native range

Native to 36 states:

AlaskaArizonaCaliforniaColoradoConnecticutIowaIdahoIllinoisIndianaKentuckyMassachusettsMarylandMaineMichiganMinnesotaMontanaNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew MexicoNevadaNew YorkOhioOregonPennsylvaniaRhode IslandSouth DakotaUtahVirginiaVermontWashingtonWisconsinWest VirginiaWyoming

County range map

BONAP county-level native range map for Sparganium emersum

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

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