CDFA Responding to GWSS Found on Plants Sold at Northern California Costcos: The California Department of Food and Agriculture’s Pierce’s Disease Control Program (PDCP) is working with Costco Wholesale...
This is an active and evolving situation. For the latest updates, please visit:https://www.cdfa.ca.gov/pdcp/gwss-costco-plants.html
May 28, 2026 — The California Department of Food and Agriculture’s...
May 19, 2026 — The Pierce’s Disease and Glassy-Winged Sharpshooter Board is investing $1.99 million in nine new research projects over the next two years to help protect vineyards and address pest...
Learn about the latest grower-funded research to safeguard your vineyards against pests & diseases, including Pierce’s disease, glassy-winged sharpshooter, brown marmorated stink bug, mealybugs, spotted...
October 15, 2025 — An adult glassy-winged sharpshooter (GWSS) was found during routine trapping in Morgan Hill, Santa Clara County, in September.
The Pierce’s Disease Control Program (PDCP)...
July 17, 2025 — The Pierce’s Disease and Glassy-Winged Sharpshooter (PD/GWSS) Board has set the PD/GWSS Winegrape Assessment rate at $1.25 per $1,000 of crop value for the 2025 harvest—the fourth...
June 27, 2025 (Sacramento, CA) — The California Department of Food and Agriculture (CDFA) has officially certified the results of the Winegrape Grower Continuation Referendum for the Pierce’s Disease...
Winegrape Growers Urged to Vote on Pierce’s Disease and Glassy-Winged Sharpshooter Assessment by May 13: California winegrape growers are now receiving ballots in the mail to vote on extending the Pierce’s...
April 14, 2025 — California winegrape growers are now receiving ballots in the mail to vote on extending the Pierce’s Disease and Glassy-Winged Sharpshooter (PD/GWSS) Assessment for another five...
New Study Shows Pierce’s Disease Investment Saves Winegrape Growers $56 Million Annually: According to a study released today, the California Department of Food and Agriculture’s Pierce’s disease (PD)...
