Citrus trees can have a long life. There are trees still producing that are over 140 years old . We have some minor virus and bacterial diseases that we have managed and controlled. We do have a relatively new virus, Huanglongbing, or more commonly known as citrus greening disease. This disease is carried by a small fly-like insect that bites the tree and transmits the virus. There is no known cure for the virus at this time, and the trees, once infected, will die relatively quickly. This disease has been very problematic for Florida citrus growers and has reduced their production by 50%. In California, the industry has geared up to closely monitor the vectoring insect and the virus. We have also embarked on a consumer education program to help prevent the disease from spreading in backyard trees. The California Research Board, funded primarily by California citrus growers, invests over $16.5 million dollars annually into research of pests, diseases, varieties and other aspects of the industry.