Skip to main content
Animal and Plant Health Inspection Service
U.S. Department of Agriculture
USDA FAQ's and resources about coronavirus (COVID-19).  LEARN MORE

Noxious Weeds

Control of Federal Noxious Weeds

Cogongrass

June 2020, Cogongrass Control Program in the Southeastern United States – Alabama, Georgia, Mississippi and South Carolina
[Finding of No Significant Impact]

Witchweed

Witchweed Eradication Program in North and South Carolina Environmental Assessment, April 2020
[Finding of No Significant Impact].

Biological Control of Federal Noxious Weeds

Giant salvinia

March 2001, Demonstration Project: Giant Salvina, Toledo Bend Reservoir and Surrounding Areas in Louisiana and Eastern Texas, Environmental Assessment

December 2002, Field Release of the Salvinia Weevil, Cyrtobagous salviniae Calder and Sands (Curculionidae: Coleoptera) for Control of Giant Salvinia, Salvinia molesta Mitchell (Hydropteridales: Salviniaceae), Environmental Assessment

Hydrilla

June 2003, Field Release of the Nonindigenous Leafmining Flies, Hydrellia pakistanae Deonier and H. balciunasi Bock (Diptera: Ephydridae), for Biological Control of Hydrilla verticillata (L.F.) Royle (Hydrocharitaceae)

Melaleuca

February 1997, Field Release of Oxyops vitiosa (Coleoptera: Curculionidae), a Nonindigenous Weevil, for Biological Control of Melaleuca, Melaleuca quinquenervia (Myrtaceae), Environmental Assessment

January 2002, Decision and Finding of No Significant Impact for Field Release of Two Biological Control Agents Boreioglycaspis melaleucae Moore (Hemiptera: Psyllidae) and Lophyrotoma zonalis Rohwer (Hymenoptera: Pergidae) for the Control of Melaleuca quinquenervia (Cav.) S.T. Blake (Myrtales: Myrtaceae) in South Florida, Environmental Assessment

January 2005, Field Release of the Biological Control Agent Fergusonina turneri Taylor (Diptera: Fergusoninidae) and its Obligate Nematode, F ergusobia quinquenerviae Davies and Giblin-Davis (Tylenchida: Sphaerulariidae) for the Control of Melaleuca quinquenervia (Cav.) S.T.Blake (Myrtales: Myrtaceae) in the Continental United States, Environmental Assessment

April 2008, Field Release of the Biological Control Agent Lophodiplosis trifida Gagné (Diptera: Cecidomyiidae) for the Control of Melaleuca quinquenervia (Cav.) S.T. Blake (Myrtales: Myrtaceae) in the Continental United States, Environmental Assessment

Old World Climbing Fern

April 2003, Field Release of a Nonindigenous Beetle, Gratiana boliviana (Coleoptera: Chrysomelidae), for Biological Control of Tropical Soda Apple, Solanum viarum (Solanaceae)

August 2004, Field Release of Cataclysta camptozonale (Lepidoptera: Crambidae), an Insect for Biological Control of Old World Climbing Fern ( Lygodium microphyllum), in the Continental United States, Environmental Assessment

September 2007, Field Release of Neomusotima conspurcatalis (Warren) (Lepidoptera: Crambidae), an Insect for Biological Control of Old World Climbing Fern ( Lygodium microphyllum), in the Continental United States, Environmental Assessment

Tropical soda apple

April 2003, Field Release of a Nonindigenous Beetle, Gratiana boliviana (Coleoptera: Chrysomelidae), for Biological Control of Tropical Soda Apple, Solanum viarum (Solanaceae)

Witchweed

Witchweed Eradication Program in North and South Carolina Environmental Assessment, April 2020
[Finding of No Significant Impact].

Biological Control of Non-Federal Weeds

Dalmatian toadflax

April 1996, Field Release of the Exotic Moths, Eteobalea intermediella and E. serratella (Lepidoptera: Cosmopterigidae), for Biological Control of Dalmatian toadflax, Linaria dalmatica, and Yellow Toadflax, L. vulgaris (Scrophulariaceae)

Ivy Gourd

August 2004, Field release of Acythopeus burkhartorum (Coleoptera:Curculionidae), a non-indigenous weevil for control of ivy gourd, Coccinia grandis (Cucurbitaceae), in Guam and Northern Mariana Islands

July 1996,&Field Release of Melittia oedipus for biological control of Ivy Gourd, Coccinia grandis (Cucurbitaceae) in Hawaii

May 2003,Field release of Acythopeus cocciniae (Coleoptera: Curculionidae), a nonindigenous leaf-mining weevil for control of ivy gourd, Coccinia grandis (Cucurbitaceae), in Guam and Saipan

Mile-a-minute weed

July 2004, Field Release of Rhinoncomimus latipes (Coleoptera: Curculionidae), a Weevil for Biological Control of Mile-a-minute Weed (Polygonum perfoliatum), in the Continental United States

Rush skeleton weed

May 2002, Field Release of Bradyrrhoa gilveolella (Lepidoptera: Pyralidae), for Biological Control of Rush Skeletonweed, Chondrilla juncea (Asteraceae)

Saltcedar

June 2010, USDA APHIS PPQ Moratorium for Biological Control of Saltcedar (Tamarix species) using the biological control agent Diorhabda species (Coleoptera: Chrysomelidae)

November 2003, Proposed Program for Control of Saltcedar (Tamarix spp.) in Fourteen States, Draft Environmental Assessment
[Final Environmental Assessment and Finding of No Significant Impact]

Siam weed

February 2002, Field Release of Cecidochares (Procecidochares) connexa Macquart (Diptera:Tephritidae), a non-indigenous, gall-making fly for control of Siam weed,Chromolaena odorata (L.) King and Robinson (Asteraceae) in Guam and the Northern Mariana Islands

Complementary Content
${loading}