05/27/2026
⚠️ Important Agricultural Alert for Sonoma County Residents from Sonoma County Department of Agriculture/Weights & Measures ⚠️
An invasive insect, the glassy-winged sharpshooter, has been discovered in grapevine plants that were shipped to Costco stores in the region. These plants may carry a serious pest that can spread Pierce’s disease, a bacterial infection that can kill grapevines and severely impact local vineyards and backyard plants.
If you recently purchased grapevine plants (or related nursery stock) from Costco:
• Do NOT plant, move, return or dispose of them in regular trash or compost
• Keep plants isolated away from other vegetation
• Contact Sonoma County Agricultural officials for guidance and safe handling instructions
Early detection and careful containment are critical to protecting Sonoma County’s vineyards, agriculture and natural environment. Community cooperation is essential in stopping the spread.
More information: https://sonomacounty.gov/invasive-insect-discovered-in-grapevine-plants-shipped-to-sonoma-county-costco-stores
