CDFA is racing to track down grapevines sold at Northern California Costco stores after glassy-winged sharpshooters were found on stock shipped from a Fresno County nursery, raising fears of a wider Pierce’s disease threat to winegrapes.


CDFA is racing to track down grapevines sold at Northern California Costco stores after glassy-winged sharpshooters were found on stock shipped from a Fresno County nursery, raising fears of a wider Pierce’s disease threat to winegrapes.