Torpedograss Biology and Management in Turf1
Torpedograss (Panicum repens) is a perennial grass with robust, creeping, sharply pointed rhizomes. Stems are stiff and erect with leaves that are folded or flat and sparsely hairy on the upper surface. Torpedograss seedheads are stiff and have ascending or appressed branches. Reproduction occurs primarily by rhizomes. Torpedograss is mainly found in the Gulf Coast region of the United States from Florida west to Texas. Control of torpedograss is limited and may require the use of non-selective herbicides, such as glyphosate, followed by resodding to eliminate it from severely infested areas.
Herbicide Options for Controlling Torpedograss in Florida Turfgrass
(Always refer to the label for specific uses, application rates, and turfgrass tolerance)
Bermudagrass
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Preemergence: none
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Postemergence: quinclorac, trifloxysulfuron
St. Augustinegrass
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Preemergence: none
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Postemergence: none
Centipedegrass
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Preemergence: none
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Postemergence: none
Bahiagrass
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Preemergence: none
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Postemergence: none
Seashore Paspalum
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Preemergence: none
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Postemergence: quinclorac
Zoysiagrass
Preemergence: none
Postemergence: quinclorac, trifloxysulfuron
Perennial Ryegrass
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Preemergence: none
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Postemergence: none
Refer to the publication Pest Control Guide for Turfgrass Managers at https://nwdistrict.ifas.ufl.edu/phag/files/2015/04/2012_UF_Pest_Control_Guide.pdf for brand names associated with chemical names listed.
