01/12/2026
Have you ever had to have your car checked for produce while moving to and from areas in and out of California? It may seem strange, but it’s more important than you might think! Southern California and the bounty of its agricultural products are vulnerable to invasive pests. To limit the spread of such pests when they get in, quarantines would often be established, as seen here from when CalTrans workers installed Mexican fruit fly quarantine signs along the Long Beach Freeway in South Gate in 1983.
There is currently a quarantine against the invasive Caribbean fruit fly in the greater Los Angeles area since October 2025, primarily affecting parts of Montebello and surrounding areas.
You can learn more about the delicate and special ecosystem of Southern California agriculture in “From Cows to Concrete: The Rise and Fall of Farming in Los Angeles” by Judith Ge**er and Rachel Surls.