Department of Agriculture /
Weights & Measures

The Department of Agriculture/Weights and Measures enforces the laws and regulations of the California Food and Agriculture Code, the California Business & Professions Code and the California Code of Regulations while serving at the discretion of the County Board of Supervisors and CDFA's  Secretary of Food & Agriculture. Sonoma County's Department of Agriculture/Weights & Measures employs a staff of thirty-nine people and has its main office in Santa Rosa.  To serve the public's needs, two small satellite offices with limited public hours are operated in the cities of Sonoma and Petaluma.

Agriculture/Weights & Measures Office Closure through Monday May 4, 2020

The Department of Agriculture/Weights & Measures' offices are closed through Monday May 4, 2020 in support of the County's plan to mitigate the spread of Coronavirus.

During this time, we will only be providing mandated essential services, including:

  • Fuel Contamination Complaints
  • Land Use Permitting
  • Pesticide Use Complaints
  • Phytosanitary Certificates
  • Quarantine Shipment Inspections
  • Wildlife Services Complaints

To access these services, please leave a voicemail message at (707) 565-2371.  You may also send an email to or leave your documents in the locked drop box outside the front door of our main office.  All voicemail, email, drop box, and U.S. Mail will be checked at least once each business day.  We do not have the capacity to respond to non-essential service requests during this time.  We value your patience during this time of emergency.

This message will be updated if the situation changes. 

Sonoma County Industrial Hemp Ordinance

On January 6, 2020 at 10:00 a.m., the Sonoma County Board of Supervisors will conduct a public hearing of a proposed ordinance amending Chapter 1 (General Provisions), Chapter 26 (Zoning Code), and Chapter 37 (Industrial Hemp Ordinance).  A moratorium on the cultivation of industrial hemp was established by this Board on April 2, 2019, which will sunset on April 30, 2020.  The Department of Agriculture/Weights & Measures developed a proposed ordinance that encompasses zoning restrictions on industrial hemp, enforcement provision to prevent illegal cannabis cultivation, and measures to ensure crop compatibility by managing pollen dispersal.  This follows a November 21, 2019 meeting at the Sonoma County Planning Commission that included recommendations for zoning restrictions.  The Planning Commission voted to recommend the approval of all of the recommended amendments to Chapter 26 of the Sonoma County Code as set forth in the report.

The public hearing will take place at the following location:

Supervisor's Chambers
Sonoma County Administration Building
575 Administration Drive, Room 102A
Santa Rosa, CA 95403
Get Driving Directions

Related Documents:

Summary Report (PDF: 229 kB)
Resolution Waiving Further Reading of the Ordinance (PDF: 127 kB)
Resolution Authorizing the Adoption of Fees (PDF: 143 kB)
Resolution Authorizing Budgetary Adjustment for County Counsel Fees (PDF: 168 kB)
Industrial Hemp Ordinance (PDF: 154 kB)
Industrial Hemp Ordinance Exhibit A - Chapter 26 Redline (PDF: 147 kB)
Industrial Hemp Ordinance Exhibit B - Chapter 37 (PDF: 205 kB)
Industrial Hemp Ordinance Exhibit B - Chapter 37 Redline (PDF: 170 kB)
PowerPoint Presentation (PDF: 438 kB)
Planning Commission Packet (PDF: 956 kB)
Planning Commission Actions (PDF: 132 kB)
Planning Commission Resolution (PDF: 87 kB)
Planning Commission Public Comments (PDF: 25,423 kB)

Public Review Draft version of VESCO Best Management Practices for Agriculture Erosion and Sediment Control Manual

This downloadable PDF is of the DRAFT version of the BMP manual used in the VESCO Program as a regulatory guide. The updated manual includes guidelines for Geologic reports, geotech and soils reports, drainage reports, biological reports including wetland and focused species reports, standard plan notes and glossary. This document is currently under review and has not yet been adopted by the Agricultural Commissioner.

Best Management Practices Manual (PDF: 3.79 MB)


A thriving agricultural industry, healthy community, environment, and economy


To promote and protect agriculture, the health and safety of our community, environment and the economy through education and the enforcement of laws and regulations.

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Contact Information

Department of Agriculture / Weights & Measures
Business Hours
Monday – Friday
8:00 AM – 4:00 PM

Closed 12:00 PM - 1:00 PM

Main Office
133 Aviation Boulevard
Suite 110
Santa Rosa, CA 95403

Sonoma County Cannabis Program

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Sonoma County Cannabis Program

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Transgenic Contamination Prevention (GMO)

Sonoma County Hills

The purpose is to protect native plants, trees, and animals from transgenic contamination

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Certified Farmers' Markets in Sonoma County

Produce Gardener

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SB 272

Senate Bill 272 requires local agencies publish a list of systems that serve as original sources of data within an agency.

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