Official Pest Report

Official Pest Reports are provided by National Plant Protection Organizations within the NAPPO region. These Pest Reports are intended to comply with the International Plant Protection Convention's Standard on Pest Reporting, endorsed by the Interim Commission on Phytosanitary Measures in March 2002.

APHIS Expands and Establishes Citrus Greening (Huanglongbing) Quarantine Areas in California

Country: United States


APHIS Expands and Establishes Citrus Greening (Huanglongbing) Quarantine Areas in California

Shailaja Rabindran, Director of Specialty Crops and Cotton Pests, (301) 851 2167, and Daniel Murphy, Assistant National Policy Manager, (775) 221-9237,


Effective immediately, the USDA's Animal and Plant Health Inspection Service (APHIS), in cooperation with the California Department of Food and Agriculture (CDFA), is expanding the areas quarantined for Huanglongbing (HLB; citrus greening), caused by Candidatus Liberibacter asiaticus, in California. APHIS is adding portions of Los Angeles, Orange, Riverside, San Bernardino, and San Diego Counties in California to the quarantined areas in DA-2022-21. In addition, APHIS is also establishing a quarantine in a portion of Ventura County, California. APHIS is taking this action because of HLB detections in plant tissue samples collected from multiple locations during routine surveys in California.

APHIS is applying safeguarding measures on the interstate movement of regulated articles from the quarantined areas in California. These measures parallel the intrastate quarantine that CDFA established. This action is necessary to prevent the spread of HLB to non‑infested areas of the United States.

The specific changes to the quarantined areas in California can be found at the APHIS Citrus Greening website. APHIS will publish a notice of this change in the Federal Register.

Under IPPC Standards, 'Candidatus Liberibacter asiaticus' the agent that causes citrus greening is a pest that is present: not widely distributed and under official control  in the United States.

Posted Date: Oct. 18, 2023, 11:28 a.m.