An incurable citrus tree disease known as Huanglongbing (HLB) has killed hundreds of residential citrus trees throughout Southern California. HLB is caused by a tiny insect no bigger than a grain of rice known as the Asian citrus psyllid. This insect feeds on citrus leaves and stems, which can infect the citrus trees with a bacteria that causes HLB. Huanglongbing affects all citrus plants, including orange, lemon, lime, mandarin, pomelo, kumquat, grapefruit and tangerine trees. It also affects some relatives of citrus, like orange jasmine and curry leaves.If you’re considering planting a citrus tree on your property this spring, first be sure to get a plant from a licensed nursery in your area. Additionally, you will need to plan ahead to manage pests and diseases on your tree throughout its lifetime.To grow a healthy citrus tree, follow these tips:
If you spot the Asian citrus psyllid or see symptoms of HLB in your citrus tree, call the state’s pest hotline at (800) 491-1899. For more tips, visit CaliforniaCitrusThreat.org.