Citrus greening is present in the Mexican States of Campeche, Chiapas, Colima, Jalisco, Michoacan, Nayarit, Quintana Roo, Sinaloa and Yucatan. Asian citrus psyllids have been detected throughout Mexico, including areas along the U.S. border (Tijuana, Mexicali, Ciudad Juarez, Reynosa and Matamoros).
Citrus plants and plant materials are prohibited entry into the United States from all countries, including Mexico, under Federal Foreign Quarantine 7 CFR 319.19 Citrus Canker and Other Citrus Diseases. This prohibition extends to all live citrus and closely related plants in the family Rutaceae, as well as budwood and cuttings.
Citrus seeds also are prohibited entry from countries where citrus greening and citrus variegated chlorosis are known to occur, including Mexico. Decorative foliage, such as orange jasmine, also can serve as a pathway for movement of citrus greening-infected psyllids.