Agricultural Commissioner
Protect and perpetuate Agriculture, the #1 industry in Butte County, by ensuring a safe and healthy agriculture product. Promote and provide confidence of buyers and sellers by ensuring fairness in local, national and international trade. Protect and promote the well being of all our customers and our community through the fair, equitable application of agricultural and weights and measures standards, emphasizing education and cooperation, including the use of technology to enhance customer service.
Pest and Weed Management

Pest Management 

The County Agricultural Commissioner is charged with the responsibility of managing nuisance pests of agriculture and of human health. A cooperative agreement by the County and the USDA provides for one Animal Damage Control Specialist for non-domestic pest management in Butte County. Among the many vertebrate pests controlled the most common are skunks, opossums, raccoons and beavers complaints, but many coyotes, bear and mountain lion complaints are responded to each year by the ADC Specialist.

The Agricultural Commissioner’s department also works with CDFA and USDA to develop the use of effective biological controls for use on troublesome pests of agriculture. Seven (7) different biological control organisms have been released throughout the county to help in the control of such bothersome pests such as: Puncture vine, Yellow Starthistle, Ash Whitefly, Purple Loosestrife, Klamath Weed and Italian Thistle.

Pest Detection 

Butte County is involved with a proactive program to primarily detect insect pests before they become established. Traps are monitored throughout the entire county for the presence of any exotic pests of agriculture, such as Mediterranean Fruitfly, Oriental Fruitfly, Melon Fruitfly, Gypsy Moth, Brown Apple Moth, Japanese Beetle, Khapra Beetle, etc. These insect pests have an enormous host range and are difficult and costly to eradicate once they become established. Through early detection this program is protecting more than agriculture. The environment is protected by limiting the need for more pesticide applications. The quality of produce is higher when exotic pests are detected early and prevented from becoming established as common pests. Consumers are protected from rising food costs as production expenses are less.

Pest Exclusion 

The Pest exclusion program provides protection to the county by regulatory control through the use of quarantines to prevent the introduction of pests, which are not known to exist or are of very limited distribution within the county. Last year over 9,800 inspections were conducted at various locations in the county checking incoming plant material for cleanliness. Many harvested crops are exported to foreign countries. Phytosanitary certificates are issued declaring the commodity shipments meet the pest-free requirements of these other countries. Seed fields are inspected during the growing season to maintain a high standard of cleanliness for export.

Weed Management 

Weed species under eradication include Spotted Knapweed, Dyer’s Woad, Skeleton Weed, and Japanese Dodder and are all very serious weed pests if left uncontrolled. Biological, chemical and mechanical methods are utilized to eliminate the most serious of these weed pests. Several other weed species are under constant surveillance to keep them under control and prevent their spreading.

West Nile Virus (WNV) 

The Agriculture Department works in cooperation with the Butte County West Nile Virus Task Force and the Butte County Mosquito and Vector Control District in addressing local issues regarding the monitoring and control of WNV. More information on WNV in California can be found at or by calling the toll-free line, 877.968.2473.

Phytophthora ramorum is the causal agent for Sudden Oak Death. This pathogen is responsible for the loss of thousands of tanoaks and native oak along the U.S. West Coast. To prevent the spread into Butte County, suspect host and associated host plants are inspected and tested for the pathogen.

Butte County is a Non-Infested but, Regulated County. The Compliance Agreement in Butte County allows host and associated host plants intrastate and interstate shipments. Each shipment must include a federal certificate or a stamp. This certificate is issued on an annual basis and an annual survey is required.

California Oak Mortality Task Force
CDFA Statewide Sudden Oak Death Quarantine
Sudden Oak Death Brochure


Main Office
Phone: 530.538.7381
Fax: 530.538.7594

Chico District Office
Phone: 530.891.2754
Fax: 530.879.3393

Gridley District Office
Phone: 530.846.4557
Fax: 530.846.5271

View full list of contacts.


Main Office:
316 Nelson Avenue
Oroville, CA 95965
Office Hours:
Monday to Friday

District Offices:
196 Memorial Way
Chico, CA 95926
Monday to Friday
10:00am - 12:00pm

239 Sycamore Street
Gridley, CA 95948
Monday to Friday
2:00pm - 4:00pm

Excludes Holidays

View full list of locations.

Agricultural Resources
CDFA's Enforcement Branch
Cal Ag Permits - Contact our office for login information.
Napa County Ag Commissioner - Instructional videos and handouts are available through Napa County's website.
Agricultural Commissioner

316 Nelson Avenue
Oroville, CA 95965

Louie Mendoza
Agricultural Commissioner

Butte County Extension (Farm Advisor)
Visit the Farm Advisor website for information about continuing education options.