HLB Virus Information and Resources 

**CITRUS QUARANTINE EXPANDED IN RIVERSIDE COUNTY- CORONA AREA AS OF DECEMBER 2025**

Parts of San Diego County are under a citrus quarantine due to the HuanglongBing (HLB) virus spreading from the Asian Citrus Psyllid. Oceanside, Valley Center, Escondido, and now Fallbrook are under quarantine. 

IF YOU BELIEVE YOUR PLANT IS AFFECTED PLEASE CALL THE CITRUS PEST HOTLINE: 1-800-491-1899

The image is a map showing the 2025 Huanglongbing (HLB) quarantine boundaries in Southern California, outlined in blue and red grid sections.
From CDFA HLB Webpage.

 The map of quarantined areas and regulation boundaries can be found on the CDFA Website.

Check out the Citrus Pest and Disease Prevention Program Citrus Insider Informational Materials.

 

Infographic about citrus quarantine in California due to Huanglongbing (HLB) disease, symptoms, affected areas, and actions to take.