Following the detection of the citrus plant disease Huanglongbing (HLB) in a residential citrus tree in the Rancho Bernardo area, a newly established quarantine area has been declared of the city of San Diego. This is the first time the disease has been confirmed in the city of San Diego, marking the second city in San Diego County to have had a positive detection of HLB.
This detection results in the establishment of an HLB quarantine area with a five-mile radius around the find site. The quarantine prohibits residents and commercial operations from moving any host plants within the area, and fruit grown in the area must undergo additional mitigation steps before it can be transported within or from this area. The quarantine zone will not intersect with the existing quarantine boundaries in the Oceanside area of San Diego County.
The updated HLB quarantine maps for San Diego County are now available online.