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Publication #ENH1231

Sedge Biology and Management in Turf1

D. E. P. Telenko, Ramon Leon, J. Bryan Unruh, and B. J. Brecke2

Members of the sedge family have leaves that are composed of a blade, sheath, and ligule. The leaf sheath is closed and the ligule is often absent, and when present is tiny. Stem structure is often triangular.

Purple nutsedge (Cyperus ligularis) is a perennial with underground runners that continue from tuber to tuber, forming chains. The tubers are bitter to taste. Purple nutsedge produces a purple or reddish seedhead and has a boat-shaped leaf tip (Figure 1).

Figure 1. 

Purple nutsedge


Credit:

D.E.P. Telenko


[Click thumbnail to enlarge.]

Yellow nutsedge (C. esculaentus) is a perennial with underground runners that stop at tubers. The tubers are sweet to taste orhave little flavor. Yellow nutsedge produces a yellow seedhead and the leaf tip is needle-shaped (Figure 2).

Figure 2. 

Yellow nutsedge


Credit:

D.E.P. Telenko


[Click thumbnail to enlarge.]

Globe sedge (Cyperus croceus) is a perennial that forms a clump. Globe sedge has shiny leaves, a hard base, and seedheads shaped like globes (Figures 3 and 4).

Figure 3. 

Globe sedge


Credit:

D.E.P. Telenko


[Click thumbnail to enlarge.]

Figure 4. 

Globe sedge


Credit:

D.E.P. Telenko


[Click thumbnail to enlarge.]

Perennial (Green) kyllinga (C. brevifolius) is a mat-forming perennial with reddish to purple rhizomes. Leaves and stems are dark green. The seedhead is simple: nearly round or oblong with three short leaves just below. Green kyllinga reproduces by seed and rhizomes and is found in low areas or where moisture is excessive.

Annual sedge (C. compressus) is an annual that spreads by seed. The seed forms in clusters of flat, greenish, sometimes glossy spikes up to 1 inch long (Figures 5 and 6).

Figure 5. 

Annual sedge


Credit:

D.E.P. Telenko


[Click thumbnail to enlarge.]

Figure 6. 

Annual sedge


Credit:

D.E.P. Telenko


[Click thumbnail to enlarge.]

Herbicide options for controlling sedges in Florida turfgrass

(Always refer to the label for specific uses, application rates, and turfgrass tolerance.)

* Indicates intermediate safety use at reduced rate according to label.

Bermudagrass

  • Preemergence: S-metolachlor (yellow and annual), sulfentrazone+prodiamine (purple, yellow, annual and kyllinga)

  • Postemergence: 2,4-D+MCPP+ dicamba+MSMA (yellow and annual), bentazone (yellow, annual, kyllinga), carfentrazone+quinclorac (yellow), flazasulfuron (purple, yellow, annual and kyllinga), halosulfuron (purple, yellow, annual and kyllinga), imazaquin (purple, yellow, annual and kyllinga), mesotrione (yellow), sulfentrazone (purple, yellow, annual, kyllinga), sulfentrazone+imazethapyr (purple, yellow, annual and kyllinga), sulfentrazone+prodiamine (purple, yellow, annual and kyllinga), sulfentrazone+quinclorac (annual and kyllinga), sulfosulfuron (purple, yellow, annual and kyllinga), trifloxysulfuron (purple, yellow, annual and kyllinga)

St. Augustinegrass

  • Preemergence: S-metolachlor (yellow and annual), sulfentrazone+prodiamine* (purple, yellow, annual and kyllinga)

  • Postemergence: bentazone (yellow, annual, kyllinga), halosulfuron (purple, yellow, annual and kyllinga), imazaquin (purple, yellow, annual and kyllinga), mesotrione* (yellow), sulfentrazone* (purple, yellow, annual, kyllinga), sulfentrazone+prodiamine* (purple, yellow, annual and kyllinga), sulfosulfuron (purple, yellow, annual and kyllinga)

Centipedegrass

  • Preemergence: S-metolachlor (yellow and annual), sulfentrazone+prodiamine (purple, yellow, annual and kyllinga)

  • Postemergence: bentazone (yellow, annual, kyllinga), carfentrazone+quinclorac (yellow), flazasulfuron (purple, yellow, annual and kyllinga), halosulfuron (purple, yellow, annual and kyllinga), imazaquin (purple, yellow, annual and kyllinga), mesotrione (yellow), sulfentrazone (purple, yellow, annual, kyllinga), sulfentrazone+imazethapyr (purple, yellow, annual and kyllinga), sulfentrazone+prodiamine (purple, yellow, annual and kyllinga), sulfentrazone+quinclorac (annual and kyllinga),sulfosulfuron (purple, yellow, annual and kyllinga)

Bahiagrass

  • Preemergence: S-metolachlor (yellow and annual), sulfentrazone+prodiamine (purple, yellow, annual and kyllinga)

  • Postemergence: bentazone (yellow, annual, kyllinga), halosulfuron (purple, yellow, annual and kyllinga), sulfentrazone (purple, yellow, annual, kyllinga), sulfentrazone+imazethapyr* (purple, yellow, annual and kyllinga), sulfentrazone+prodiamine (purple, yellow, annual and kyllinga)

Seashore paspalum

  • Preemergence: sulfentrazone+prodiamine (purple, yellow, annual and kyllinga)

  • Postemergence: flazasulfuron (purple, yellow, annual and kyllinga), halosulfuron (purple, yellow, annual and kyllinga), sulfentrazone (purple, yellow, annual, kyllinga), sulfentrazone+prodiamine (purple, yellow, annual and kyllinga), sulfentrazone+quinclorac (annual and kyllinga)

Zoysiagrass

  • Preemergence: S-metolachlor (yellow and annual), sulfentrazone+prodiamine (purple, yellow, annual and kyllinga)

  • Postemergence: 2,4-D+MCPP+ dicamba+MSMA (yellow and annual), bentazone (yellow, annual, kyllinga), carfentrazone+quinclorac (yellow), flazasulfuron (purple, yellow, annual and kyllinga), halosulfuron (purple, yellow, annual and kyllinga), imazaquin (purple, yellow, annual and kyllinga), sulfentrazone (purple, yellow, annual, kyllinga), sulfentrazone+imazethapyr (purple, yellow, annual and kyllinga), sulfentrazone+prodiamine (purple, yellow, annual and kyllinga), sulfentrazone+quinclorac (annual and kyllinga), sulfosulfuron (purple, yellow, annual and kyllinga), trifloxysulfuron (purple, yellow, annual and kyllinga)

Perennial ryegrass

  • Preemergence: sulfentrazone+prodiamine (purple, yellow, annual and kyllinga)

  • Postemergence: bentazone (yellow, annual, kyllinga), mesotrione (yellow), sulfentrazone (purple, yellow, annual, kyllinga), sulfentrazone+prodiamine (purple, yellow, annual and kyllinga), sulfentrazone+quinclorac (annual and kyllinga)

Refer to the publication Pest Control Guide for Turfgrass Managers at http://turf.ufl.edu/pdf/2012_UF_Pest_Control_Guide.pdf for brand names associated with chemical names listed.

Footnotes

1.

This document is ENH1231, one of a series of the Environmental Horticulture Department, UF/IFAS Extension. Original publication date December 2013. Visit the EDIS website at http://edis.ifas.ufl.edu.

2.

Darcy E. P. Telenko, postdoctoral research associate; Ramon Leon, assistant professor, Agronomy Department; J. Bryan Unruh, associate professor, Environmental Horticulture Department; Barry J. Brecke, professor emeritus, and West Florida Research and Education Center, UF/IFAS Extension, Gainesville, 32611.


The Institute of Food and Agricultural Sciences (IFAS) is an Equal Opportunity Institution authorized to provide research, educational information and other services only to individuals and institutions that function with non-discrimination with respect to race, creed, color, religion, age, disability, sex, sexual orientation, marital status, national origin, political opinions or affiliations. For more information on obtaining other UF/IFAS Extension publications, contact your county's UF/IFAS Extension office.

U.S. Department of Agriculture, UF/IFAS Extension Service, University of Florida, IFAS, Florida A & M University Cooperative Extension Program, and Boards of County Commissioners Cooperating. Nick T. Place, dean for UF/IFAS Extension.