Cogongrass – aka Jap Grass

Invasive Species

“Cogongrass (Imperata cylindrica) has become a major problem for landowners, land managers, foresters, and governmental agencies since its introduction into Alabama. Known to many as “Japan grass,” cogongrass was accidentally introduced into Alabama near Grand Bay about 1911 as seed in packing materials from Japan”

“Native to Asia and introduced into the Mobile area in early 1900s. This tall perennial grass with yellowish foliage forms dense circular infestations that exclude all native species and has no known uses. It is highly flammable and poses a severe fire hazard. Over half of Alabama’s counties have cogongrass infestations with the most severe being in the southern tier of counties. Cogongrass is steadily spreading northward by windblown seeds, movement of contaminated fill dirt, and probably through horticultural plantings (commercial red variety) as well as hay, pinestraw, and straw sells from infested areas. This is a federal and Alabama State listed noxious weed. Successful eradication is achieved with multiple herbicide treatments over several years.” For more info go here.

“Cogongrass (Imperata cylindrica), an invasive grass from Asia, is considered “the seventh worst weed in the world”. It was introduced, accidently, into Alabama in 1911 as seed in packing materials from Japan. This species is wide-spread in Florida, Alabama and Mississippi and is starting to spread in Georgia, South Carolina and Tennessee. Cogongrass now contaminates 1.25 million acres in the southeastern United States. This invasive exotic can displace native plants and animals as well as threaten the safety of people and their structures.”

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