Mexican Fruit Fly Quarantine Expanded In San Diego County

SAN DIEGO, CA — California officials have expanded a Mexican fruit fly quarantine after the pest was detected during routine inspections in El Cajon and Spring Valley.

The quarantine now covers approximately 111 square miles and overlaps with the existing La Mesa quarantine area, which affects parts of Spring Valley, Bonita and the cities of El Cajon, La Mesa, Lemon Grove, San Diego and Santee.

The affected area is bounded by state Route 67 to the north, Proctor Valley Road to the south, state Route 125 to the west and Riggs Road to the east.

• Also see: Mexican Fruit Flies Found In La Mesa Prompt Quarantine In Parts Of San Diego County

The California Department of Food and Agriculture, the U.S. Department of Agriculture and the San Diego County Agricultural Commissioner are working to contain the infestation and support growers, wholesalers, retailers and home gardeners.

As part of eradication efforts, sterile male Mexican fruit flies may be released within the quarantine area. Properties within about 200 meters of detections will be treated with an organic formulation of Spinosad, and fruit will be removed within 100 meters of locations where larvae or adult flies are found.

The quarantine restricts the movement of host fruits and plants for growers, wholesalers, retailers and nurseries. Home gardeners are urged to consume homegrown produce on site and avoid transporting fruit off their property to help prevent the pest from spreading.

Residents who believe their fruits or vegetables may be infested can call the state's Pest Hotline at 800-491-1899.

The Mexican fruit fly can infest more than 50 types of fruits and vegetables. State officials said the pest poses a threat to California agriculture, local food supplies and backyard gardens.

According to CDFA, invasive fruit flies are often introduced when travelers illegally bring fruits or vegetables into the state. Officials urged travelers to follow "Don't Pack a Pest" guidelines to help protect California's agricultural and natural resources.