Monitor for this disease by checking for damaged fruit on your tree, as well as fruit in storage. Sometimes affected fruit develops a pungent odor and can ruin fruit held in storage. See the UC IPM web page on Brown Rot to learn more.
If you see what look like small “tunnels” on your citrus...
[From the Summer issue of the UC IPM Retail Nursery & Garden Center News]
The incurable citrus disease huanglongbing (HLB) has been detected in dozens of backyard trees in Los Angeles and Orange counties and most recently in Riverside. The bacterium that causes this disease is spread from tree to tree by Asian citrus psyllids (Figure 1). HLB, also known as citrus greening, has already devastated the citrus trees in Florida, Georgia, Louisiana, South Carolina, and Texas. There is no known treatment for the disease, which usually kills the tree within three to five.../span>
If you subscribe to our Pests in the Landscape blog, you'll notice that we frequently post updates about Asian citrus psyllid (ACP) and huanglongbing (HLB). Educate yourself about ACP and HLB so you can help prevent its spread. Here are a few things you can do:
Attend one of two Northern California Retail Nursery and Garden Center IPM Workshops this January!
UC IPM is offering two hands-on, train-the-trainer workshops designed especially for retail nursery and garden center employees, managers, owners, and affiliates. Topics will include invasive pests, Asian citrus psyllid and huanglongbing disease, household pests, as well as how to serve your customers' IPM and pesticides needs. Participants will receive materials and resources to bring back and train others in your store and to help you better serve your customers' pest needs.
Tuesday, January 24, 2017
Oakland Center, CSU East Bay -- Oakland, CA
8:30 AM - 3:30 PM
Two additional huanglongbing-positive trees have been confirmed in a residential backyard in the San Gabriel region of Los Angeles County. The finds, which bring the total number of HLB-positive trees in California to 30, were found on a property that had infected trees previously confirmed and removed. At this time, the California Department of Food and Agriculture is working with the property owner to have the trees removed. The finds are a result of ongoing intensive HLB surveys being done in the area.
For information about what you can do to monitor trees for Asian citrus psyllid see the UC ANR ACP Distribution and Management page UC IPM Pest Note: