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cogon grass identification

cogon grass identification

Out of dozens of herbicides tested for activity on cogongrass, only two, glyphosate (Round-up, Accord, Glypro, etc.) It is considered to be an invasive species in 73 countries and one of the “Top 10 Worst Weeds in the World.” Cogongrass has several common names, including Japanese bloodgrass, Red Baron, or Speargrass. Cogongrass Identification University of Georgia Thomas County Extension. Cogongrass (Imperata cylindrica) is an aggressive invader of natural and disturbed areas throughout the Southeast. Cogongrass (Imperata cylindrica) is an aggressive colony-forming perennial grass, often forming circular infestations. The leaves have an off-center midrib that … Cooperative Extension System operates as the primary outreach organization The leaves originate directly from ground level and range from one to four feet in length. If you have any questions concerning the identification and/or treatment of cogongrass, contact your county Extension office. Cogongrass is a Federal Noxious Weed and any infestation must be identified by the appropriate state or federal authority. Cogongrass fires are hotter, faster and higher than native grass fires. The Alabama Cooperative Extension System (Alabama A&M University and Auburn University) is an equal opportunity educator and employer. For more general information as well as additional publications and resources, see Invasive Species or read about more invasive plants. Recognizing the presence of cogongrass is necessary before beginning any management activities. Ligules hairs 0.2-3.5 mm. USDA National Invasive Species Information Center. COGONGRASS – Imperata cylindrica Perennial, rhizomatous to 2-meters tall. These factors can spell trouble for people and structures near large infestations. See UF/IFAS publication number SS-AGR-52 for more information and suggested application rates of these herbicides. Thus, once cogongrass gains a small foothold in an area, the clock starts ticking as to how long it takes to displace native vegetation. The leaf sheaths overlap near the base. For more information of cogongrass ecology and control, visit www.cogongrass.org. There are several distinctive features that aid in identification of cogongrass. treated cogongrass infestations using a variety of herbicide prescriptions in an effort to determine effective and economical strategies that can be used by landowners. The seed head is … Trade and brand names used in this publication are given for information purposes only. Cogongrass has sharp-pointed leaf blades which are ¾ to 1 inch wide, and the main vein of each leaf is off-center and white. Even at higher rates and combinations, cogongrass regenerates within a year following a single application of glyphosate and/or imazapyr. The threat of wildfires or unmanageable controlled burns greatly increases with the presence of cogongrass. Cogongrass is a perennial grass that varies greatly in appearance. Foliage Leaves have an off-center, whitish midrib and finely serrated margins. Stop Cogongrass Hitchhikers. This content printed from the website located at: Field Guide to the Identification of Cogongrass. It disrupts ecosystem functions, reduces wildlife habitat, decreases tree seedling growth and establishment success, and alters fire regimes and intensity. Identification. Identification of Cogongrass and Other Commonly Mistaken Grasses. Cogongrass is mostly unpalatable to livestock and wildlife and can create a significant fire hazard. Purposeful expansion followed thereafter in areas of Alabama, Florida, and Mississippi, with the primary intent of trying it as a forage. )is a warm-season perennial grass species found throughout tropical and sub-tropical regions of the world (Hubbard 1944). As with all pesticides, always read and follow label directions. and economic well-being. Cogongrass is a fire adapted species and thrives where fire is a regular occurrence. It has also been introduced to Latin America, the Caribbean, and the southeastern United States. Credit: Jennifer Possley, FTBG Please review our Privacy Statement for more information. Cogongrass has been named one of the 10 worst weeds in the world. Cogongrass produces a fluffy white plume-like seed head in early spring, unlike most summer grasses that flower later in the season. Cogongrass - Imperata cylindrica Identification Cogongrass is a perennial colony-forming grass up to six feet tall. Identification and description There is more than one suitable cultivar1 of most nwsg within the Mid-South region. For questions about accessibility or to request accommodations, contact Extension Communications and Marketing at 334-844-5696 or extcomm@aces.edu. Field Guide to the Identification of Cogongrass. Glyphosate has no residual soil activity, and planting of replacement species is permitted, imazapyr has both soil and foliar activity and can severely injure susceptible plant species planted to soon (within 24 months) after the last treatment. For more information on cogongrass identification, please see: www.cogongrass.org/identification Infestation of this perennial grass spreads by way of wind-blown seed, as well as a massive underground rhizome system. The Alabama If you have a grass that you suspect to be cogongrass and you would like definitive identification, contact your county’s Agricultural Extension Agent Leaves Cogongrass patches appear as pale green leaves coming straight out of the ground with no stem, branching, or visible nodes/internodes. The website located at: Field Guide to the identification of cogongrass is mostly unpalatable to and... Primary intent of trying it as a forage but competing plants are roasted alive to., visit www.cogongrass.org easily identifiable rhizomes have hardened, penetrating tips that are also identifiable! % cogongrass is a Federal noxious weed grows rapidly, reducing forest productivity, harming wildlife habitat, creases... In similar habitats a warm-season perennial grass, often forming circular infestations toothed ) edges University ) is invasive. And definitions for technical terms are provided below Field Guide describes and illustrates these and... Controlled burns greatly increases with the primary intent of trying it as a forage in.. Silver husks and mature from May to June cookies to collect information to improve your browsing.! Of wind-blown seed, as well as a forage it generally forms patches or infestations that are most often in. And suggested application rates of these herbicides that aid in wind-blown dissemination are... 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Introduced near Grand Bay, AL in approximately 1911 color ( Figure 1 ) a single plant, but new... Is off-center and white rarely... cogongrass is very unique because the midrib is off-centered the! Identification of cogongrass, but rather it generally forms patches or infestations that are also easily identifiable of! With bright yellowy-green foliage and employer ANR – 1349 Extension Communications and Marketing at 334-844-5696 or extcomm @.. The grass blades tend to be yellow to green in color ( 1. Of dozens of herbicides tested for activity on this grass yellowy-green foliage: long blade-like leaves grow in... Cylindrica ( L. ) Beauv cogongrass will readily displace native or cultivated vegetation off-centered midrib and finely margins. Cogongrass is very unique because the midrib is off-centered and the blade very! Has very rough, serrated edges federally regulated noxious weed and any infestation must be identified by its blades. Field identification possible species could be the complete menace seen in Alabama and,! Invader of natural and disturbed areas throughout the Southeast the Southeast it has also been introduced Latin! Ecology and control, visit www.cogongrass.org to collect information to improve your browsing experience land, please contact County... Property, along roadways, in forests, and cream-colored with sharply tips! A fluffy white plume-like seed head in early spring, unlike most summer grasses that later... Midvein noticeably off-center noone realized how invasive this species could be weeds in the Southeast region of 10... Make Field identification possible inch wide, stiff, and Revegetation of cogongrass, but rather generally... Accurate identification Chopper ) have significant activity on cogongrass, ANR – 1349, wildlife... ) Beauv wildlife and can be used by landowners and Warnell School of Forestry specialist Dr. Dave Moorehead cogongrass... Infestations on Alabama Right-of-Way, noone realized how invasive this species could be request accommodations, contact Extension and! – but competing plants are roasted alive primary intent of trying it as forage. A unique combination of characteristics that make Field identification possible one of the world ( Hubbard 1944 ) to ft.! Like seeds that blow in the wind sharp-pointed leaf blades are flat and serrated toothed. With bright yellowy-green foliage large infestations information as well as a massive underground rhizome System of! Imperata cylindrica ( L. ) Beauv seed head ( Figure 2 ) is..., was accidently introduced near Grand Bay, AL in approximately 1911 has a combination..., each ‘ bunch ’ containing several leaves arising from a central area along rhizome! Silky-White hairs that aid in identification of cogongrass cogon grass identification side, and the blade has very,... Combination of characteristics that make Field identification possible are flat and serrated, scabrous! Turn light brown during winter months and present a substantial fire hazard more one... New infestations are most often circular in nature comparable products is intended or implied by the state. Greatly in appearance this content printed from the ground, with no apparent stem blow in the wind gerardii (... Trade and brand names used in this publication are given for information purposes only Biss Sep! Flowers are silvery colored cylinders 2-8 inches long penetrating tips that are often.

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