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Photographer: John D. Byrd
Source: Mississippi State University
Cover photo: Chris Evans


Imperata cylindrica

Origin: Native to Southeast Asia

Impact: Cogongrass has been ranked as one of the ten worst weeds of the world. It can invade and overtake disturbed ecosystems, forming a dense mat that makes it nearly impossible for other plants to coexist. Large infestations can alter the normal fire regime of a fire-driven ecosystem by causing more frequent and intense fires that injure or destroy native plants.

Learn More: Species Profile.

Report Form

If you have spotted Imperata cylindrica (Cogongrass), use this report form to send an email to the appropriate authorities.

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Did You Collect a Specimen?
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Comments: Describe the species, impact, infestation or generally what you are seeing.

Please upload a photo of the specimen or the site where the specimen was seen. NOTE: The photo file must be no larger than 2 MB in size.

NOTE: We are expriencing an issue in which after you click on the "Submit Report Now" button below, you will be directed to a blank page. HOWEVER, don't worry, your report will be submitted! (You may simply close the blank page.)