The affected plants may contain the broad-headed sharpshooter, which is not established in California, or the glassy-winged sharpshooter, which is already present in the state. Officials said both insects can spread Pierce’s disease, a plant disease that has caused millions of dollars in losses to California’s wine grape industry and threatens vineyards, orchards, nurseries and home gardens.
The plants were distributed to Costco warehouses throughout California, including seven locations in San Diego County.