Master Gardener Laura Simpson gives advice this week on how to reduce the spread of citrus greening disease.
Orange citrus infected with HLB or citrus greening disease is one of the most devastating diseases of citrus caused by bacteria. , also known as huanglongbing , is a bacterial disease that kills citrus trees and as of now has no known cure. The bacteria that cause it is transmitted via the Asian citrus psyllid .
Signs of HLB disease include general tree decline, asymmetrical leaf yellowing, and bitter-tasting fruit. Overall leaf yellowing can be caused by any number of nutritional deficiencies, but HLB causes irregular, blotchy yellowing. Sometimes only one branch will have yellow leaves. If your tree shows any of these symptoms, especially if psyllids are present, contact CDFA immediately.
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