Asian Citrus Psyllid

The Asian citrus psyllid (ACP) is a pest that acts as a carrier or vector spreading "huanglongbing" (HLB), a devastating disease of citrus trees. This bacterial disease is transmitted to healthy trees by the psyllid after it feeds on infected plant tissue.
NEW! homeowner outreach website for the Citrus Pest & Disease Prevention Program

Asian Citrus Psyllid Protocol

Citrus Disease Threat Continues

The Asian Citrus Psyllid and the Citrus Disease Huanglongbing

ACP in the Agricultural Setting

ACP in the Home Garden Setting

On Guard Against a Citrus Threat   (video)

Warriors Against the Asian Citrus Psyllid (video)

ACP Quarantine

ACP Treatment Options for the Retail Nursery

How the ACP Quarantine affects Farmers' Markets and Swap Meets

University of California's ACP Publication  

Visit for more information on this new threat to agriculture in San Diego County