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Home / Invasive Species Resources

Invasive Species Resources

Provides access to all site resources (alphabetically), with the option to search by species common and scientific names. Resources can be filtered by Subject, Resource Type, Location, or Source.

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USDA. Animal and Plant Health Inspection Service.

Effective immediately, the Animal and Plant Health Inspection Service (APHIS) is removing a portion of Harris County within the Braeswood area of Houston, Texas, from citrus canker regulations. The successful partnership between APHIS and the Texas Department of Agriculture (TDA) has resulted in a citrus canker-free status in this area since 2016.

On May 20, 2016, APHIS confirmed the positive identification of citrus canker in two adjacent sour orange trees in a city park in the Braeswood area of Houston, in Harris County, Texas. TDA removed and destroyed both positive citrus canker trees. TDA established an intrastate quarantine area for citrus canker that paralleled the federal citrus canker regulatory requirements specified in 7 Code of Federal Regulations (CFR) 301.75. APHIS completed a comprehensive delimiting survey around the area and found no additional citrus trees positive for citrus canker within the survey area. The removal of this quarantine area is reflected on the APHIS website, which also contains a description of all the current federal citrus canker quarantine areas.

USDA. Animal and Plant Health Inspection Service.

Effective immediately, the Animal and Plant Health Inspection Service (APHIS) is adding 37 sections in Charlotte County, 17 sections in Collier County, 45 sections in Glades County, 68 sections in Hendry County, and 28 sections in Lee County, to the citrus black spot (CBS) quarantine area in Florida. We are taking this action because of confirmed detections of P. citricarpa (formerly known as Guignardia citricarpa), the causal agent of CBS, during annual surveys conducted during the 2019 and 2020 growing seasons by APHIS, the Florida Department of Agriculture and Consumer Services Division of Plant Industry (DPI). Federal Order DA-2012-09 outlines these measures and restrictions and parallels DPI’s state-interior quarantine and intrastate movement requirements.

In 2010, CBS was first identified in the Collier and Hendry Counties of Florida. Symptoms of CBS are most evident on mature fruit, with little to no symptoms on leaves. Fresh citrus fruit moved interstate from the CBS quarantine areas must be processed using APHIS-approved methods and packed in commercial citrus packinghouses operating under a compliance agreement with APHIS. APHIS prohibits the movement of any other citrus plant parts outside the quarantine area. The APHIS website contains a description of all the current CBS quarantine areas, Federal Orders, and APHIS-approved packinghouse procedures.

USDA. Animal and Plant Health Inspection Service.

Effective immediately, the Animal and Plant Health Inspection Service (APHIS) is issuing a Federal Order (Oct 14, 2021; PDF | 171 KB) that expands the existing imported fire ant (IFA) quarantine areas in North Carolina and Tennessee. APHIS is taking this action to prevent the interstate spread of IFA. APHIS is taking these actions based upon verification from the North Carolina Department of Agriculture and Consumer Services and the Tennessee Department of Agriculture’s Division of Consumer and Industry Services that IFA is present and established in the areas listed. For additional information on the Federal IFA regulatory program, please contact the IFA National Policy Manager, Herbert Bolton, at (301) 851-3594 or herbert.bolton@usda.gov.