Cyperus esculentus L. Cyperaceae (Sedge family)
Rhizomatous perennial sedge.
Yellowish green, shiny, grass-like leaves are long and narrow to a sharp point with distinct ridging along the midvein. Leaves are mostly basal and alternate, pointing outward from the stem in three directions.
Erect, solid, up to 3-foot-tall stems are triangular in cross-section. Plants spread by wiry, scaly rhizomes and nutlike tubers produced at the rhizome tips.
Flowers and fruit
The seedhead consists of numerous yellowish brown spikelets, which occur in a terminal, umbrella-like cluster. Under each seedhead is a whorl of several long, leaf-like bracts. The seed is enclosed in a single-seeded, three-angled, yellowish brown fruit with a blunt end.
Tubers, rhizomes and, very rarely, seeds.
Print a PDF of this page: Yellow nutsedge
The MSU IPM Program maintains this site as an access point to pest management information at MSU. The IPM Program is administered within the Department of Entomology, fueled by research from the AgBioResearch, delivered to citizens through MSU Extension, and proud to be a part of Project GREEEN.