La Mirada’s history is primarily associated with the McNally Ranch’s olive production, where it became the largest olive orchard in the world and producing 15% of California’s olive oil supply. In addition to olives, the ranch also had two hundred acres of lemon trees, as well as alfalfa, grapefruit, and oranges. In fact, citrus has been a beloved part of California landscapes and homes for generations.
Unfortunately, a plant disease that kills citrus trees has been found in California. The disease, called Huanglongbing or citrus greening disease, isn’t harmful to humans, but it is fatal for citrus trees and has no cure. The disease is spread by a pest called the Asian citrus psyllid as it feeds on citrus tree leaves. Until researchers find a solution, California homeowners who enjoy growing fresh citrus fruit in their yards, and California farmers tending to $2.5 billion worth of citrus fruit trees must work together to protect their trees.
What can you do to help? Follow these best practices to save your citrus trees and limit the spread of Huanglongbing and the Asian citrus psyllid.
- Inspect trees for the Asian citrus psyllid and Huanglongbingmonthly, and whenever watering, spraying, pruning or tending trees. If you spot the pest or disease, call: 800-491-1899.
- Psyllids are most noticeable when new leaves are growing on the tips of the branches.
As part of your tree care, visit your local nursery or garden center to get advice on products that can help protect your citrus tree. - Do not move citrus plants, foliage or fruit into or out of your area, and especially across the state or international borders. This could unknowingly contribute to the spread of the pest and disease.
- When planting a new citrus tree, be sure to get your tree from a reputable, licensed nursery in your local area.
- When grafting citrus trees, only use registered budwood that comes with source documentation, such as the budwood offered through the Citrus Clonal Protection Program
- Be sure to dry out citrus tree clippings or double bag them before removing the plant material from the property.
Click here to learn more about how to detect the pest and disease in citrus trees and protect California’s beloved citrus heritage.
Source: California Citrus Threat