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 the Citrus Greening (Huanglongbing) Quarantined Area in California

Country: United States

Title:

APHIS Expands the Citrus Greening (Huanglongbing) Quarantined Area in California

Contact:
Abby R. Stilwell, Agriculturist, at (919) 323-6296 or abby.r.stilwell@usda.gov and Daniel Murphy, Agriculturist, at (775) 221-9237 or daniel.m.murphy@usda.gov.

Report:

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 citrus greening (Huanglongbing; HLB), caused by Candidatus Liberibacter asiaticus, in California. APHIS is expanding the quarantined area in the Coto de Caza area of Orange County by 11 square miles, the Rancho Santa Margarita area of Orange County by 93 square miles, the Perris area of Riverside County by 37 square miles, and the Rancho Cucamonga and San Bernadino areas of San Bernadino County by 88 square miles. These measures parallel the intrastate quarantines that CDFA established on May 19 (Orange and San Bernadino Counties), June 17 (Orange County), and July 1 (Riverside County), 2025. APHIS is taking this action because of citrus greening detections in plant tissue samples collected from residential properties in Orange, Riverside, and San Bernadino Counties. There are 1.44 acres of commercial citrus impacted by this expansion.

APHIS is applying safeguarding measures outlined in 7 CFR 301.76 and Federal Orders pertaining to the interstate movement of regulated articles from the quarantined areas in California. This action is necessary to prevent the spread of citrus greening to non-infested areas of the United States.

The APHIS Citrus Greening website contains specific changes to the quarantined areas in California. 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: July 22, 2025, 4:23 p.m.