The GWSS Program serves to detect and control the vector of Pierce’s Disease, a potentially catastrophic disease of vineyards. One of the vectors of this xylem-restricted bacterium is the Glassy-winged Sharpshooter. This program is primarily involved with the placement of traps in both urban and agricultural sites. In addition, incoming shipments of host materials and susceptible county plantings are also inspected.

For more Information, you can visit the Pierce’s Disease Control Program (PDCP) on the California Department of Food and Agriculture website:

CDFA - Pierce's Disease Control Program (ca.gov)

An overview of the Glassy-winged Sharpshooter problem in California - YouTube

Glassy-winged Sharpshooter Host List (ca.gov)

Glassy-Winged Sharpshooter | Center for Invasive Species Research (ucr.edu)

Glassy-winged Sharpshooter Management Guidelines--UC IPM (ucanr.edu)

Brochures about Glassy-winged Sharpshooter:

English:     https://www.cdfa.ca.gov/pdcp/Documents/GWSSEnglishBrochure.pdf

Spanish:    https://www.cdfa.ca.gov/pdcp/images/GWSSEspanolBrochure.pdf