The California Department of Food and Agriculture (CDFA) and the US Department of Agriculture (USDA) have confirmed the first detection of Huanglongbing (HLB) in San Diego County. The disease was detected in a lemon and orange tree in a residential Oceanside neighborhood. This detection triggers a 5-mile HLB quarantine to restrict the movement of citrus, a mandatory survey, and treatment of all citrus trees within 250-meters of the site.
Now more than ever, citrus growers need to inspect their trees for signs of HLB, the Asian citrus psyllid (ACP), and keep up with ACP area wide treatments! To determine if your location is in the HLB quarantine, visit the interactive HLB quarantine map. To see if you require mitigation to move your citrus, please review this Information for Citrus Growers/Grove Managers in an HLB Quarantine document. A detailed CDFA response to an HLB detection can be found in the CDFA Action Plan for ACP and HLB. A summary can also be found in this flyer.