Napa County Agricultural Commissioner's Office

06/17/2026

The Napa County Agricultural Commissioner's office will be closed Friday, June 19, 2026 in observance of Juneteenth.

[👇para español👇]

Most Napa County offices will be closed Friday, June 19 in observance of Juneteenth. Law enforcement and public safety services will continue to be provided. The Napa County Sheriff’s Office will be available; however, the public office will be closed on this day. Napa County Fire will also be available for emergency services. For emergencies, dial 911. For non-emergencies, call the dispatch center at 707-253-4451.

La mayoría de las oficinas del Condado de Napa estarán cerradas el viernes 19 de junio en conmemoración de Juneteenth. Se seguirán brindando servicios de aplicación de la ley y seguridad pública. La Oficina del Sheriff del Condado de Napa estará disponible; sin embargo, la oficina pública estará cerrada en los días mencionados. El Departamento de Bomberos del Condado de Napa también estará disponible para los servicios de emergencia. Para emergencias, marque 911. Para no emergencias, llame al centro de despacho al 707-253-4451.

06/15/2026

Help protect Napa County from invasive pests! If you see signs of Glassy-Winged Sharpshooter (GWSS), contact the Napa County Agricultural Commissioner's Office at 707-253-4357 or [email protected].

¡Ayude a proteger al Condado de Napa de las plagas invasoras! Si observa señales de la chicharrita de alas cristalinas (Glassy-Winged Sharpshooter, GWSS), comuníquese con la Oficina del Comisionado Agrícola del Condado de Napa al 707-253-4357 o por correo electrónico a [email protected].

06/11/2026

The Napa County Agricultural Commissioner’s Office is asking residents to check whether they purchased a grapevine, citrus tree, or other fruit tree from Napa Costco or nearby Costco locations during April or May.
These plants may be associated with shipments containing the glassy-winged sharpshooter (GWSS), an invasive pest that threatens vineyards and backyard ornamentals.
If you have one of these plants:
• Keep it isolated in its original container.
• Do not move or transport it.
• Do not place it in the trash or compost.
• Contact our office immediately.
📞 707-253-4357
📧 [email protected]
Early detection and reporting are critical to protecting Napa County agriculture.
Thank you for helping keep our community and vineyards safe.

06/09/2026

06/08/2026

06/03/2026

🍇 HAVE YOU PURCHASED A GRAPEVINE RECENTLY? 🍇

The Napa County Agricultural Commissioner’s Office is asking residents to check whether they purchased a grapevine, citrus tree, or other fruit tree from Napa Costco or nearby Costco locations during April or May.

These plants may be associated with shipments containing the glassy-winged sharpshooter (GWSS), an invasive pest that threatens vineyards and backyard ornamentals.

If you have one of these plants:

• Keep it isolated in its original container.
• Do not move or transport it.
• Do not place it in the trash or compost.
• Contact our office immediately.

📞 707-253-4357
📧 [email protected]

Early detection and reporting are critical to protecting Napa County agriculture.

Thank you for helping keep our community and vineyards safe.

06/01/2026

¿Compró usted una vid en Costco entre el 21 de abril y el 21 de mayo?
Por favor, llame a nuestra oficina para programar una inspeccion 707-253-4357.

05/30/2026

The California Department of Food and Agriculture’s Pierce’s Disease Control Program (PDCP) is working with Costco Wholesale and county agricultural officials after invasive glassy-winged sharpshooter (GWSS) insects were found on grapevine shipments sold at select Costco locations in Northern California between April 21 and May 19. Costco is not at fault and is cooperating with our response. This is an active and evolving situation.

For the latest updates, please visit:
https://www.cdfa.ca.gov/pdcp/gwss-costco-plants.html

05/29/2026

PUBLIC NOTICE: To support our local agricultural industry and protect our county from potential glassy-winged sharpshooter (GWSS) introduction, the Napa County Agricultural Commissioner's Office will maintain weekend hours for inspections of plants purchased at Costco in April and May.

05/29/2026

Protecting Our Backyards from GWSS!

Did you know the glassy-winged sharpshooter (GWSS) can feed on over 300 different types of plants? While we are placing 500 traps in local vineyards this June, our residential neighborhoods are actually a major focus. This pest thrives on everyday greenery like backyard citrus, crape myrtles, and oleanders.

To protect our community, our Pest Detection team has deployed 405 yellow sticky traps across local residential areas. Our trained staff inspects these traps every two weeks, and any suspect samples go straight to the state lab for rapid identification.

Early detection is the absolute key to stopping a neighborhood infestation before it spreads. Keep an eye out for our teams in the field, and thank you for helping us keep our local yards safe!

Image description: pest detection worker placing a yellow sticky trap on a tree.