Invasive Species - What's New on NISIC's Site

The 2025-2030 Strategic Plan outlines a bold vision focused on science-based conservation, empowering land stewards, and advocating for strong public policies to stop the spread of invasive plants. Provides a plan summary overview, as well as the full report for a detailed breakdown of their proposed steps to achieve this vision.

The U.S. Department of Agriculture’s (USDA) Animal and Plant Health Inspection Service (APHIS), and the California Department of Food and Agriculture (CDFA) in collaboration with County Agricultural Commissioners, are proud to announce that after a year of hard work we have eradicated all populations of invasive fruit flies from California. This significant achievement is a testament to the hard work of our agencies and the critical support from the public. 

The Clemson University Department of Plant Industry destroyed the first secondary nests of the yellow-legged hornet this month in South Carolina near Hilton Head Island. Yellow-legged hornets were also detected in November 2023 in a trap in South Carolina. 

A new approach to tackling the spotted-wing drosophila involves manipulating the behavior of these insects. The spotted-wing drosophila is an invasive pest of fruits that infests ripe, ready-to-eat fruit. The pest poses a significant threat to farmers because it is very difficult to control with standard pesticides. ARS scientists have devised a solution involves manipulating the behavior of these insects by disguising healthy fruit as being infected with an unappealing pathogen.

This three-part webinar series will highlight project-based applications of remote sensing for plant species of interest especially those affecting grasslands and aquatic inland lakes and waterbodies, and more with a lens towards innovative uses of hyperspectral data for additional invasive species detection.

Register to attend: Aug 14, Aug 21, Aug 28, 2024 -- Three 90 min sessions (12-1:30 pm EDT)

Farmers in the southeastern U.S. struggle with the invasive guava root-knot nematode, a microscopic roundworm, which infects and damages a variety of crops, particularly sweetpotatoes. To combat this worm, ARS researchers at the U.S. Vegetable Laboratory in Charleston, South Carolina, have identified a sweetpotato line from the agency’s expansive germplasm collection that has shown high levels of resistance to the guava root-knot nematode as well as resistance to other crop insects.

On August 5, the Washington Department of Fish and Wildlife (WDFW) received notification from a local wholesale aquarium company in Renton of possible invasive freshwater mussels on a shipment of Marimo moss balls (Aegagropila linnaei). Moss balls are a commonly used decorative algae in aquariums and water gardens. Lab testing confirmed the mussels were zebra mussels (Dreisena polymorpha), a prohibited aquatic invasive species in Washington that, if established in local waters, would be capable of causing significant infrastructure and environmental damage. Zebra mussels and a close relative, the quagga mussel, are not known to be established in Washington.

Washington state agencies are asking for your help to check your trees for signs and symptoms of invasive insects. Damaging invasive insect species, such as spotted lanternfly, longhorned beetles, and emerald ash borer, are emerging in their adult form. ate summer is often the peak time for these invasive insects to emerge from trees in their adult stage. If you see or suspect you see an invasive insect, report a sighting.

The U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) is announcing the implementation of Phase VII of the Lacey Act provisions. APHIS is finalizing the associated declaration requirement required by Congress for plant and wood products. In this phase, declarations will be required for all remaining plant product Harmonized Tariff Schedule (HTS) codes that are not 100-percent composite materials. Implementation of Phase VII will begin December 1, 2024.

If an importer imports items that contain plant products, but do not currently file a Lacey Act declaration, they likely will need to file under Phase VII. Phase VII includes the broadest range of items, items as varied as industrial or medicinal plants, handbags, plywood, laminated wood, tools, matches with natural wood stems, products of natural cork, products of bamboo and rattan, footwear and more. Plant and wood products included in past phases include timber, some furniture, essential oils, wood cases and trunks, and woodwind instruments and their parts and accessories.
See also: Lacey Act Phase VII Implementation: Frequently Asked Questions and Plant Protection Today: Lacey Act Phase VII Is Coming (Apr 27, 2023)

Laurel wilt disease has been spreading through the U.S. since 2002 and is fatal to tree species in the laurel family. Forest Service researchers are continuing to monitor the disease, search for treatment methods, and develop a better understanding of how it is affecting sassafras and other susceptible species.