Recently, the California Department of Food and Agriculture and the United States Department of Agriculture discovered Huanglongbing, also known as HLB or citrus greening disease, in La Habra and Anaheim. Five-mile quarantines have been established in each area, which include the city of Garden Grove.
The HLB quarantine map for Orange County is available online.
The quarantine prevents the sale of all host nursery stock and the movement of all host plants within a five-mile radius, and it applies to residents and commercial operations.
HLB kills citrus trees and has no cure. The disease is not harmful to humans or animals.
The disease is spread by a pest called the Asian citrus psyllid. The Asian citrus psyllid is a small insect that feeds on citrus tree leaves, which causes a bacteria called Huanglongbing to spread. If a tree is infected, it can die in as little as five years.
To help prevent the spread of HLB, the California Department of Food and Agriculture recommends the following actions:
- Inspect your citrus trees monthly.
- Do not move citrus plants, leaves or foliage in or out of your community.
- Talk to your local nursery about products that can protect your tree.
- If you suspect your tree has the disease, call the California Department of Food and Agriculture at (800) 491-1899.
For more information, please visit the Citrus Pest & Disease Prevention Program.