The Asian citrus psyllid has been found throughout Southern California. To date, only one tree infected with HLB has been discovered and it was in a backyard tree in Los Angeles County. To protect your citrus, it is important to:
For information on specific quarantines within California and treatments related to the Asian citrus psyllid in California, visit the California Department of Food and Agriculture.
A map showing the presence of the Asian citrus psyllid and Huanglongbing (HLB), also known as citrus greening disease, in the United States can be viewed here, courtesy of the United States Department of Agriculture.