05/29/2026
⚠️ CONSUMER ALERT ⚠️
Anyone who purchased grape plants from Costco between April 21 and May 21, 2026, is being asked to contact the Stanislaus County Agricultural Commissioner’s Office as soon as possible.
Agricultural officials are concerned the plants may carry the glassy-winged sharpshooter (GWSS), an invasive insect capable of spreading Pierce’s disease, a bacterial infection that is often fatal to grapevines.
If you purchased a grape plant from Costco during this timeframe:
• Contact the Stanislaus County Agricultural Commissioner’s Office at (209) 525-4730 or [email protected] to report your plant and receive inspection instructions.
• Keep the plant isolated in its original pot or container.
• Do not plant, transport, relocate, or attempt to return the plant.
• Do not place the plant in the trash or compost bin.
Costco is directly notifying customers who purchased the affected grape plants and offering refunds.
Read the full press release for additional information:
https://www.stancounty.com/news-room/news-releases/news-2026/20260526_CostcoGrapePlantsFinal.pdf
Please share!