The state detected the tree-killing bacterial disease during routine inspections. It is a major threat to San Diego County's $138 million annual citrus crop.

The CDFA and County Department of Agriculture, Weights and Measures will work with residents in the immediate area to arrange for treatment of citrus trees as a protective measure against the disease.

The disease causes dark, thick bands between leaf veins, which can be seen on both green and brown leaves,” said Wright in a written response. “If you have beech trees, take time now to look ...

Deciduous trees have unique autumn leaf colors that are specific to every species. Fall's most common leaf colors are red, yellow, and orange.