Checking Your Citrus Trees for Asian Citrus Psyllid and Huanglongbing Disease


Thank you to the University of California’s Division of Agriculture and Natural Resources and to California Citrus Mutual.

The Asian citrus psyllid (ACP), Diaphorina citri, is a tiny mottled brown insect, about the size of an aphid, that poses a serious threat to California’s citrus trees—including those grown in home gardens and on farms. The psyllid feeds on all varieties of citrus (e.g., oranges, grapefruit, lemons, and mandarins) and a few very closely related ornamental plants in the family Rutaceae (e.g., calamondin, box orange, Indian curry leaf, and orange jessamine or orange jasmine).

There is currently no cure for the huanglongbing (HLB) disease that kills citrus trees and is spread by an insect, the Asian citrus psyllid. It is estimated that 60% of Californians have at least one citrus tree in their yard and so HLB is going to have a devastating effect on the California residential landscape. Currently the only way to control the disease is to control the pest that spreads it.

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About Kevin

Mayor - City of Oakley, Data Center Manager of Mainframe Operations and Optimization – USS-POSCO INDUSTRIES, Co-Founder and Board Member - Friends of Oakley A Community Foundation, Advisory Board – Opportunity Junction, Commissioner - Contra Costa Transportation Authority, Board Member - Tri Delta Transit and Transplan
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