Also known as Japanese bloodgrass, cogongrass (Imperata cylindrical) is an invasive perennial grass-like plant that grows in U.S. Department of Agriculture plant hardiness zones 5 through 9. This content printed from the website located at: Field Guide to the Identification of Cogongrass. Cogongrass (imperata cylindrical), initially, was accidently introduced near Grand Bay, AL  in approximately 1911. Cogongrass (Imperata cylindrica) is an aggressive invader of natural and disturbed areas throughout the Southeast. Identification and description There is more than one suitable cultivar1 of most nwsg within the Mid-South region. 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. For more information on cogongrass identification, please see: www.cogongrass.org/identification and economic well-being. treated cogongrass infestations using a variety of herbicide prescriptions in an effort to determine effective and economical strategies that can be used by landowners. Flowering typically occurs in spring or after disturbance of the sward (mowing, etc.). Seed in packing materials from Japan made its way into the environment. Cooperative Extension System operates as the primary outreach organization Cylindrical in shape; 2-8 inches in length (total flower or seed head) Silvery white in color; Light fluffy dandelion-like seeds; Blooms from late March to mid June (flower timing depends somewhat on local climate) The leaves appear light green, with older leaves becoming orange-brown in color. 3. The clumps of grass arise from the ground, with no apparent stem. Identification Rarely do you find a single plant of cogongrass, but rather new infestations are most often circular in nature. Websites. Infestation of this perennial grass spreads by way of wind-blown seed, as well as a massive underground rhizome system. TexasInvasives.org. Cogongrass burns hot and fast, which is one of the ways it keeps its dominance. These factors can spell trouble for people and structures near large infestations. If you think you have cogongrass on your land, please contact your state department of agriculture or USDA-APHIS office. At the time, noone realized how invasive this species could be. The Mississippi Department of Agriculture and Commerce has assembled a task force of scientists, educators, government officials and agricultural leaders to recommend a comprehensive survey and control program for cogongrass (Imperata cylindrica) before the invasive weed overtakes pastures, forestland, wildlife habitats and landscapes in the state. This field guide describes and illustrates these characteristics and compares them to other grass species common found in similar habitats. Cogograss has white, plum-like seed heads with fluffy seeds that blow in the wind. Identification: Cogongrass is an aggressive perennial grass reaching 1 to 5 feet in height. Foliage Leaves have an off-center, whitish midrib and finely serrated margins. The Alabama In order to stop this weed from becoming the complete menace seen in Alabama and Florida, we need your help. Cogongrass (Imperata cylindrica) is an invasive, non-native grass that occurs in the Southeast region of the United States. Trade and brand names used in this publication are given for information purposes only. They are produced during early to mid-June. It is important to identify and determine the cultivar best suited for the intended use (whether wildlife habitat, livestock forage or both) and site conditions (such as bottomlands or dry uplands). Cogongrass is a perennial grass that varies greatly in appearance. Moorhead. Forms dense stands in mostly upland habitats. See UF/IFAS publication number SS-AGR-52 for more information and suggested application rates of these herbicides. This field guide describes and illustrates these characteristics and compares them to other grass species common found in similar habitats. Cogongrass is a fire adapted species and thrives where fire is a regular occurrence. Cogongrass Identification. Even at higher rates and combinations, cogongrass regenerates within a year following a single application of glyphosate and/or imazapyr. Cogongrass fires are hotter, faster and higher than native grass fires. Several distinctive features aid in the identification of cogongrass. Stop Cogongrass Hitchhikers. Cogon grass is a tall (2-5 ft.) perennial grass with bright yellowy-green foliage. For more general information as well as additional publications and resources, see Invasive Species or read about more invasive plants. A minimum of two applications are needed, realizing that older infestations may require two to three years of treatment to eliminate rhizomes. The Alabama Cooperative Extension System (Alabama A&M University and Auburn University) is an equal opportunity educator and employer. Recognizing the presence of cogongrass is necessary before beginning any management activities. © 2020 by the Alabama Cooperative Extension System. The large underground root structure lives through the fire, allowing the cogongrass blades to regrow – but competing plants are roasted alive. The rhizomes are hard, scaly, and cream-colored with sharply pointed tips. The flowers are silky panicles, 1 to 8 inches long appearing from February to May. 7% Purposeful expansion followed thereafter in areas of Alabama, Florida, and Mississippi, with the primary intent of trying it as a forage. Individual leaf blades are flat and serrated, with an off-center prominent white midrib (Figure 2). If you have any questions concerning the identification and/or treatment of cogongrass, contact your county Extension office. Grass is 1-5 ft. tall, often leaning into mats when over 3 ft. tall, tufts of long leaves, yellow-green, blades with off-center midvein, silver plumed flowers and seeds in spring, arising from sharp-tipped white-scaly rhizomes. First, cogongrass infestations usually occur in circular patches. Cogongrass (Imperata cylindrica) is an aggressive colony-forming perennial grass, often forming circular infestations. 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