citrus

Out with the snake, in with horse! January 31 marks the start of the Chinese New Year. Many people will be enjoying the rich cultural traditions of this holiday such as food, parades and exchanging gifts. One traditional Chinese New Year gift is citrus fruit, such as mandarin oranges and tangerines. This fruit is said to bring luck, wealth and prosperity.

However, without proper precautions citrus can also bring something else that may not be so favorable—the Asian citrus psyllid. This pest carries citrus greening disease, also known as Huanglongbing (HLB), a disease threatening the commercial citrus industry and homegrown citrus trees alike. Although it is not harmful to humans or animals, the disease is fatal for citrus trees and has no known cure.

If you are like millions of other Americans, there’s a chance you have a citrus tree or two growing in your yard. As a residential citrus grower, it is very important to check your trees regularly for signs of disease.

A diseased tree in your yard may seem like no big deal; however, it can easily spread disease to other nearby trees and make its way to large commercial groves where significant damage can be done. If citrus disease were to spread out of control, it has the potential to destroy the entire U.S. citrus industry, causing the loss of billions of dollars and millions of jobs.

With summer winding down and school starting soon, there’s just enough time for one last trip! No matter where your travels take you, be sure to bring back lots of photographs, souvenirs and memories—but one thing you don’t want to bring home with you is citrus.

Moving citrus may seem completely harmless, but it can come with huge consequences. One little tiny bug, the Asian citrus psyllid could be hiding on citrus fruit, trees, clippings or nursery stock. It can carry citrus greening disease, or Huanglong Bing (HLB), a certain death sentence for infected trees. Pests carrying the disease can spread it to healthy trees. Throughout the U.S. and abroad, millions of acres of citrus trees have already been destroyed.

No one should live in this world for himself alone, but to do good for those who come after him.

This post is part of the Science Tuesday feature series on the USDA blog. Check back each week as we showcase stories and news from USDA’s rich science and research portfolio.

This year’s weather has presented some challenges for Florida’s citrus growers. In December, sub-freezing temperatures hit the citrus-growing region in the state, threatening this year’s citrus crops, which account for more than half of all citrus production in the United States.