In early July of 2015, the California Department of Food and Agriculture (CDFA) and the United States Department of Agriculture (USDA) confirmed detection of the citrus disease known as huanglongbing (HLB), or citrus greening, in the San Gabriel area of Los Angeles County. The HLB disease does not pose a threat to humans or animals, but is fatal to citrus trees.
Since the finding, emergency treatment and quarantine actions have taken place to protect California from the negative economic and environmental impacts the establishment of this pest throughout California would cause.
Residents of the affected area have previously been invited to attend two open house meetings in July and August with cooperating agency officials familiar with this program to individually address constituent concerns and answer any questions. To date, CDFA has completed treatment in the quarantine area after visiting over 2,400 residences and completing inspections on more than 6,000 plants and 1,300 citrus psyllid samples. For years to come, CDFA will continue its intense survey of local citrus trees and psyllids in the area, and surrounding region, to determine if HLB exists anywhere else.
If there is an HLB confirmed find, an open house public meeting will be held prior to initiating any treatment activities in the area. Limited ground treatments with a formulation of a pyrethroid may be applied to the foliage of citrus trees on your property. At the same time, an imidacloprid insecticide will be applied to the soil beneath the citrus trees for ongoing protection. CDFA will follow all pesticide label directions.
Residents of properties scheduled for treatment will be notified at least 48 hours prior to the application.
For more information about HLB, please visit CDFA’s website at www.cdfa.ca.gov/plant/acp/ or contact CDFA's toll-free PEST HOTLINE at (800) 491-1899
If you have any questions, you may also contact my District Office at (323) 264-4949.