Noxious Weeds

We will be starting to rent out our equipment on May 2022.

A few changes:

We will not be renting out equipment for Sterilant/Bare ground.

We will not be renting out equipment for turf. (your lawn)

We will not be spraying pastures unless you have noxious weeds present.

There are many local companies that offer this service. I have compiled a list to assist in finding what is right for you. Contact me for access to this list.

Thank you for your understanding at this time

Bonneville County Noxious Weed Control

To Make a Payment for Service Click Here

Mission Statement

The goal of this program is to implement County and State noxious weed ordinances. We will accomplish this by achieving the most effective Vegetation Management Program for the preservation of Bonneville County’s valuable property by utilizing Education, Mechanical control, Biological control, Cultural control, and Chemical control for the better of Bonneville County and its neighbors. The effectiveness of this program is due to the authority and cooperation of the County Commissioners.

Mailing Address:
Bonneville County Noxious Weed Control
605 N. Capital Ave.
Idaho Falls, ID 83402

Office: (208) 529-1397

Physical Address:
Noxious Weed Department
2702 Manwill Rd.
Idaho Falls, ID 83401

Swan Valley Area
Interagency Noxious Weed Control Building
3329 Swan Valley Highway
Swan Valley, ID 83449

Office Hours:
Monday thru Thursday
6:00am to 4:30pm

Closed most holidays

Employment Opportunities

Bonneville County hires seasonal employees for Summer help. Wages typically start at $11.00 with a $1.00 pay raise upon receiving a ISDA Professional Applicators License. (you must be 18 years of age to obtain)

For a job application with Bonneville County Noxious Weed Control Department click on the link below and fill out the General Application. Turn in the application to Bonneville County Noxious Weed Controls Office or Bonneville County’s Human Resources Office.

Job Application

Rules and Regulations

For many years there has been a push for laws supporting weed control.  We now have the Plant Protection Act of 2000 (which suspended FIFRA). Each act enabled the government to take a stand against noxious weeds to protect public health, livestock, and the land of the United States.

Weeds are determined as NOXIOUS by the Secretary of Agriculture, United States Department of Agriculture (USDA), and/or a designated person from each state. This individual will declare a weed NOXIOUS by its potential harm to people, crop production, livestock, and property.

Idaho's Noxious weeds are plant species that have been designated "noxious" by law in the Idaho Code (title 22, chapter 24, "Noxious Weeds").  The law is implemented using administrative rules.  These rules are contained in IDAPA (Idaho Administrative Procedures Act) 02, title 06, chapter 22 "Noxious Weed Rules."  

For information on the State Noxious Weed Law click Idaho State Noxious Weed Law

Bonneville County Nuisance Weed Ordinance

Each county is allowed to make there own weed ordinances which may include weeds deemed as a threat for their county or a nuisance weed ordinance for their county. This is accomplished through action of the County Commission.

Within Bonneville County we utilize the State Weed Law as well as a Nuisance Weed Ordinance. The Nuisance Weed Ordinance specifies that weeds are not to exceed 10 inches in height. Bonneville county may send enforcement letters to the owners of property who are in violation of this ordinance instructing them to mow, till, or disk their property.

Nuisance Weed Ordinance

Cost Share Programs:  

In many situations dealing with only Noxious Weeds BCW is able to offer financial help with controlling these invasive weeds.  Currently there are only 67 listed weeds.  Our current program is to offer a 50:50 cost share to land managers who qualify for the program.  To qualify contact our office (208-529-1397) and we will work out the details. Many other Idaho's State CWMA's have offered free herbicide to land managers.  

Weed Identification

There are 67 noxious weeds in the State of Idaho. 24 of those are in Bonneville County. Each weed is listed under 1 of 4 different categories -  Prohibited, EDRR, Control, and Containment.

Noxious Plants

The term NOXIOUS is a term applied to those plants that are regulated by the government because the are considered harmful to the environment, or animals. These plants are also illegal to sell or plant.   

Prohibited Plants

 These are plants that are not allowed within the county. Like noxious weeds they are illegal to sell and plant. We use the regulation of prohibited plants to prevent future problems.

Statewide EDRR

(Early Detection Rapid Response)  *Plants in this category must be reported to the Idaho State Department of Agriculture (ISDA) with 10 days after being identified at the University of Idaho or by another qualified authority approved by the ISDA Director.  Eradication of these weeds must begin in the same season they are found.*

Noxious and potentially Noxious weeds that may not be in Bonneville County and require the most attention.


EDRR Noxious Weed found in Bonneville County is Policeman’s helmet, believed to have been eradicated

Statewide Control

These are noxious weeds that have a minimal presence in Bonneville County and it is believed that these weeds can be removed within a few years and monitored thereafter.  
Some examples of Statewide Control Noxious Weeds in Bonneville County are Black henbane, bohemian knotweed , Buffalobur, Dyer’s woad, Flowering Rush, Japanese knotweed,  Perennial sowthistle, Russian knapweed, and Small bugloss.


Dyers woad

Small Bugloss

Purple loosestrife



Leafy spurge

Whitetop/Hoary cress

Statewide Containment

Noxious Weeds that pose the greatest economical threat to property. These weeds have a strong presence in the county and the intention may not be to eradicate all patches, but to contain the weeds in their current location and help landowners manage them.


Musk thistle


Spotted knapweed

Containment Noxious Weeds in Bonneville County are Canada thistle, Dalmation toadflax, Diffuse knapweed, Field bindweed, Houndstongue, Leafy spurge, Oxeye daisy, Perennial pepperweed, Plumeless thistle, Poison hemlock, Puncturevine, Purple loosestrife, Rush skeletonweed, Saltcedar, Scotch thistle, Spotted knapweed, White bryony, Whitetop, and Yellow toadflax.

Nuisance Weeds

Nuisance weeds are weeds that Bonneville County will control if they are becoming a problem for the lands of the County.

Education and Outreach

We are always looking for opportunities to educate groups from Elementary students to community groups.  

For great information on weeds and identification go to  

Services Available

Noxious Weed Investigation/Consultation

Consultations concerning noxious weeds are available from one of our full time employees.

Noxious Weed Free Forage and Hay:  Noxious weed free forage is required when taking livestock onto U.S. Forest Service or Bureau of Land Management Lands to protect them from new invasions. For more information see  ISDA Noxious Weed Free Forage and Hay Program to find Certified hay in your area.


EIWCA Weed Warrior Workshop
Eastern Idaho Weed Control Association hosts a training workshop for all applicators in Eastern Idaho. This will be a workshop for current pesticide license holders as well as a 2 day training for new applicators. Presenters will be Chemical and Equipment representatives along with professional weed managers.

Upper Snake River Highlands  Rangeland Conservation Project
in efforts to keep Bonneville County we have teamed up with the Upper Snake River Highlands CWMA to create a program to help land owners afford, and control their noxious weeds. These programs boundaries are from Wyoming/Idaho border to the top of Granite Hill, From Teton/Bonneville County line to the top of Fall Creek. While all noxious weeds are our target there are a few weeds that this program is specifically interested in controlling which include: Canada thistle, Dalmatian toadflax, Diffuse knapweed, Houndstongue, Leafy spurge, Musk thistle, and Spotted knapweed.

Grays Lake Rangeland Conservation Project
This project is funded by the Highlands CWMA and includes all the landowners in the Grays Lake area. While we are on the look out for all noxious weeds there are specific weeds that we are also watching out for in this area. These weeds are Canada thistle, Houndstongue, Musk thistle, Spotted knapweed, White top/Hoary cress, and Yellow toadflax.

Rural Idaho Falls Weed Reduction Project

Bonneville County intends to work with all land owners around the Idaho Falls area to reduce the impact of noxious weeds. With this program we offer a cost share program for approved private land owners, and various land managers in the control of Noxious Weeds ONLY.

This project involves using insects as well as animals to help manage noxious weeds. Unlike some of the other projects the Bio-control agent takes time to take affect, and is preferably used along side a herbicide treatment.

We work very close with the University of Idaho Bio Control Research Lab as well as the Nez Perce Tribe Bio-Control Center. Tap on the ICONs at the end of page to obtain more information.

Noxious Weed Mapping and Inventory

Mapping involve the use of Global Positioning System or GPS units to map the location of noxious weeds in the county. By mapping these noxious invaders we will be able to see the distribution of noxious weeds in our area. This helps us to know areas that are in need of our attention, or areas to plan for future applications.


An important tool in the noxious weed management toolbox is our connections. Click on any of the links below to see the websites of other helping hands in the fight against noxious weeds. Also where would we be without our educators; so take a look at the schools and programs that are affiliated with the fight against noxious weeds.