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Species
Information
- yellow
nutsedge (chufa flatsedge)
- Cyperus
esculentus L.
- USDA
Symbol: CYES
- Oregon
Noxious Weed Designation: B
- Pictures
Identification: Perennial sedge; grows 6 to 30 in tall. Three-ranked leaves and triangular pithy stems. True leaves grow from base while long leaf-like bracts radiate out just below the umbrella-like flower cluster. Leaves and stems shiny. Spikelets yellowish-brown and borne on ends of branches of unequal lengths. Can spread by seeds, roots, or by small underground nutlets that may lie dormant in soil for several years.
Impacts: Yellow nutsedge has invaded cultivated agriculture lands throughout North America. It prefers moist soils, and is most troublesome in onions, sugar beets, gardens, and ornamentals. Its nut-like turions resist dessication from tillage and damage from herbicides.
Biological
Controls: There are no approved biological control agents available.
Oregon
Maps of Yellow Nutsedge Distribution
Links:
USDA
Plants Database information on yellow nutsedge
GRIN
Database information on yellow nutsedge
Oregon Department
of Agriculture information on yellow nutsedge
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