The next scourge. Some predict total devastation of California vineyards by this vine bacterium, which is carried by a vector formerly known as the flying blue and green sharpshooter. Today the glassy winged sharpshooter is transmitting the disease from host plants of a riparian nature to the vines. Bacteria clog the plumbing, so to speak. The xylem can no longer draw water in up from the roots to the leaves and berries. There is no cure. Southern California and coastal Santa Cruz vineyards have fallen victim. Tulare in the Central Valley and Sonoma have reported recent infestations.