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Invasive Species Resources

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University of Minnesota. Minnesota Aquatic Invasive Species Research Center.

Tennessee Department of Agriculture.

The Tennessee Department of Agriculture (TDA) is advising forest landowners to monitor their sassafras trees after detecting new cases of laurel wilt disease in Robertson and Hamblen Counties. In the last quarter of 2019, the disease was detected in trees in Montgomery, Cheatham, Dickson and Williamson Counties. "These new detections of this invasive disease show a significant geographic jump across the state," State Forester David Arnold said. "This is yet another unfortunate example of an invasive pest impacting our forests. Landowners should take caution to prevent the spread of this disease if detected on their property."

Laurel wilt is a fungal disease caused by an invasive pathogen, Raffaelea lauricola, which can affect a range of plants, including sassafras and spicebush in Tennessee. Choked of water, trees wilt and die within a few weeks or months. Currently, no treatment has been developed that can cure laurel wilt disease or protect trees from infection. The best way to prevent the spread of laurel wilt is to avoid movement of firewood or other untreated timber. Tennesseans are urged to monitor their sassafras trees for browning of leaves, leaf loss, and staining in the inner bark. If you suspect your trees might have laurel wilt disease, contact Forest Health Program Specialist Sam Gildiner at 615-837-5439 or sam.gildiner@tn.gov. TDA Division of Forestry staff will assist in identifying the disease and recommending management actions, if appropriate.

Tennessee Department of Agriculture.

Three Tennessee counties have been quarantined for Emerald Ash Borer (EAB) after detection of the forest-devastating insect, bringing the total number of Tennessee counties under a state and federal EAB quarantine to 62. Cheatham, Giles, and Maury counties have been added to the list of areas restricted for the movement of firewood, ash nursery stock, ash timber, and other material that can spread EAB. The tree-killing beetle was recently found in these three counties through the United States Department of Agriculture’s EAB detection program.

University of California - Riverside. Center for Invasive Species Research.

San Bernardino County (California). Department of Public Health.

See also: Mosquito & Vector Control for more resources 

University of Arkansas. Cooperative Extension Service.

Tennessee Department of Agriculture.

Plumas-Sierra Noxious Weeds Management Group (California).
See also: Agricultural Brochures for more species
Plumas-Sierra Noxious Weeds Management Group (California).
See also: Agricultural Brochures for more species
Plumas-Sierra Noxious Weeds Management Group (California).
See also: Agricultural Brochures for more species
University of Minnesota. Minnesota Aquatic Invasive Species Research Center.
University of Arkansas. Cooperative Extension Service.
See also: Common Disease Problems for more fact sheets.

Minnesota Department of Natural Resources.

Tennessee Wildlife Resources Agency.

The TWRA needs your help in collecting invasive carp. If you catch a small carp, nine inches or less, the agency is asking that you put it on ice or freeze it and contact them immediately. If you are unable to keep the fish, the TWRA asks you to submit photos of the fish in hand and send it to them. You can contact the TWRA by phone at 731-423-5725 or toll-free at 1-800-372-3928, by fax at 731-423-6483, or by email at ans.twra@tn.gov.

University of California - Riverside. Center for Invasive Species Research.

University of California. Agricultural and Natural Resources. Kearney Agricultural Center. Citrus Entomology.
California Department of Food and Agriculture. Plant Health Division.

University of California - Riverside. Center for Invasive Species Research.

University of Tennessee. Institute of Agriculture.

See also: Beef and Forage Center - Health for more resources