Asian Citrus Psyllid Distribution and Management
University of California
Asian Citrus Psyllid Distribution and Management

ACP/HLB Distribution and Management

An Interactive Website for Asian Citrus Psyllid Management


Commercial Citrus – How will the citrus grower manage the pest and disease in commercial groves?

The deadly huanglongbing (HLB) is spreading in California and threatens commercial citrus production. This website provides a map of where the Asian citrus psyllid (ACP) and HLB disease are located. Since there is currently no cure for the disease, the best management strategy is reducing the psyllid vector with insecticides and removing HLB-infected trees. This website provides a list of the ACP-effective insecticides, information about the best timing of their use & strategies for treatment. 

Home Gardeners

Residential Citrus – What should I do to protect the citrus in my yard?

There is currently no cure for the devastating disease, huanglongbing (HLB), which kills trees in the citrus family and is spread by a tiny insect, the Asian citrus psyllid (ACP). It is estimated that 60% of Californians have at least one citrus tree in their yard, meaning that HLB may have a devastating effect in residential areas of California. Currently the only way to control the disease is to reduce ACP and to remove trees that are infected or located near known infections. This website provides information about how near the insect and disease are to your home, and what you can do to help protect your trees.

Master Gardeners

How can I help educate the public on this very important subject? 

This site has important resources for you to use to teach others about Asian citrus psyllid and huanglongbing.

Watch the 4-minute video below to learn what you can do to help control Asian citrus psyllid & HLB

Authors of this website are Dr. Matt Daugherty and Dr. Beth Grafton-Cardwell (retired) Extension Specialists in the Department of Entomology, UC Riverside, and Robert Johnson with UC Agriculture & Natural Resources, Informatics & GIS Statewide Program

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