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Citrus Pest & Disease Prevention Program


The Citrus Pest & Disease Prevention Program is an initiative funded by California citrus growers and administered by the California Department of Food and Agriculture dedicated to combating serious pests and diseases that threaten the state’s citrus trees.

The California citrus we all know and love is at risk. A devastating plant disease called Huanglongbing, also known as HLB or citrus greening, has been found in Southern California. HLB kills citrus trees and there is no cure. Diseased trees produce bitter, hard and lopsided fruit, and eventually die. The disease is spread by a pest called the Asian citrus psyllid as it feeds from tree to tree. Psyllids are small, about the size of an aphid, and can be seen on the small, tender, new leaves of citrus trees. The best way to protect California citrus from the disease is to stop the spread of the pest.  While the disease is not harmful to humans, it has been called a death sentence for backyard citrus trees.

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What to Expect Video (Series: 1st Clip)

A plant disease that kills citrus trees has been found in California. We must work together to save the orange, mandarin, lemon and other citrus trees we grow in our backyards and in citrus orchards. This is the first in a series of videos explaining this important issue.

What to Expect Video (Series: 2nd Clip)

Agriculture officials are working throughout the state to stop the spread of a dangerous pest and plant disease that could kill citrus trees. This is the second in a series of videos about Huanglongbing, also known as HLB or citrus greening disease. Watch to learn about disease prevention activities.

What to Expect Video (Series: 3rd Clip)

Residents who have a citrus tree on their property may be visited by state agriculture officials applying free treatments to protect against the Asian citrus psyllid, a dangerous pest found throughout the state. Learn more about what to expect in this video, part of a series about efforts to save California citrus.

What to Expect Video (Series: 4th Clip)

Do you love California oranges and mandarins? Our beloved citrus trees are at risk due to a plant disease called Huanglongbing found in our state. This is the final in a series of videos explaining this threat to California citrus. Watch to learn more and visit to find out how you can help save California citrus.



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