Species: 

Alternanthera philoxeroides

Common Name(s): 

alligator weed, pig weed

Habitats Impacted: 

riparian/aquatic

Regions likely to be Impacted: 

SE

Present in Neighboring States?

AR, KS, LA, TX

Currently known from Oklahoma?

Yes

Alternanthera philoxeroides

Chris Evans, University of Illinois, Bugwood.org

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What you should know!

Forms dense mats that crowd out native species and impede recreational activities. Restricts oxygen levels of water and increases sedimentation. Introduced in contaminated ship ballast water. Grows vigorously and spreads from floating fragments.

Management information