USDA, APHIS, PPQ’s Center for Plant Health Science and Technology began staffing scientists in 1997 for what was to become the newly created Plant Epidemiology and Risk Analysis Laboratory (PERAL). One of the first recognized priorities of scientists working within PERAL was to partner with professional societies to produce pest lists. PERAL entered into a cooperative agreement with the Weed Science Society of America to create a three-year project to better address noxious weed issues. Read more about the project here...

The fact sheets below are one of the results of this project.