California’s HLB Quarantine Expands

Thu, 11 Sep 2025 13:32:41 GMT

The California Department of Food and Agriculture says it has expanded the state’s quarantine boundary for huanglongbing (HLB) in the San Clemente area of Orange and San Diego counties.

CDFA says the agency also expands the Asian Citrus Psyllid Bulk Citrus Regional Quarantine in San Clemente area of San Diego County, which reflects this updated HLB quarantine.

Also known as citrus greening or HLB, the disease is caused by the Candidatus Liberibacter asiaticus bacteria, with the Asian citrus psyllid as its vector.

This follows the addition of 33 square miles in the Perris area of Riverside County in August , which included 8.84 acres of commercial citrus.

Citrus Greening Disease/HLB

California’s HLB Quarantine Expands