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Bolboschoenus robustus (Sturdy bulrush)
Romfh, Peggy

Bolboschoenus robustus

Bolboschoenus robustus (Pursh) Soják

Sturdy Bulrush

Cyperaceae (Sedge Family)

Synonym(s): Schoenoplectus robustus, Scirpus maritimus var. agonus, Scirpus maritimus var. macrostachyus, Scirpus robustus

USDA Symbol: BORO5

USDA Native Status: L48 (N)

Reddish-tan, ovoid to cylindrical spikelets clustered closely against a sharply triangular stem.

Three-squares are an important group of sedges for wildlife. Their seeds are among the most common foods of ducks and marsh birds. Their stems and roots are eaten by muskrats and geese, and they provide cover for many birds and animals. The larger marsh species Olney Three-square (S. americanus) reaches a height of 10' (3 m); its small spikelets are all gathered along one side of the stalk near the top.


From the Image Gallery

9 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Grass/Grass-like
Root Type: Fibrous
Leaf Arrangement: Alternate
Leaf Venation: Parallel

Bloom Information

Bloom Color: Red
Bloom Time: Jul , Aug , Sep , Oct


USA: AL , AR , CA , CT , DC , DE , FL , GA , LA , MA , MD , ME , MS , NC , NH , NJ , NY , RI , SC , TX , VA , VT
Native Distribution: Maine, south to Florida and west to Texas and also in California.
Native Habitat: Brackish, coastal marshes.

Growing Conditions

Water Use: High
Light Requirement: Sun
Soil Moisture: Wet
CaCO3 Tolerance: Medium

Additional resources

USDA: Find Bolboschoenus robustus in USDA Plants
FNA: Find Bolboschoenus robustus in the Flora of North America (if available)
Google: Search Google for Bolboschoenus robustus


Record Modified: 2017-07-20
Research By: JAM

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