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Some plants are Toxic to Horses & Livestock:


This link is a guide to Plants Poisonous to Horses and Livestock commonly found in Lincoln County, Washington.

The above is a guide of several plants that can be found growing in Lincoln County that are poisonous to horses and livestock. To protect your animals from poisoning, learn to identify the poisonous plants that grow in your pasture or rangeland.

Prevention is the best medicine. Ensure that your horses and livestock have adequate hay and/or healthy pasture to graze. Provide adequate water and avoid overgrazing.

Most poisonous plants have an unpleasant taste that animals avoid if they have anything else to eat. However, if they have no choice but to eat these plants, they might develop a taste for them. Herbicides are derivatives of salts, and they often increase the palatability of plants, along with its sugar content. Be cautious when grazing animals after herbicide applications. Avoid grazing treated areas until plants have dried. You should wait until plants are dead before introducing animals to the site.

Watch for unusual behavior in your animals. If you suspect a poisoning, consult a veterinarian as soon as possible. Be sure to collect samples of the plants you suspect caused the poisoning for positive identification.

The symptoms listed in the following pages are those that are most likely to be observed. However, not all symptoms will be seen in all cases. Signs of poisoning may vary greatly, depending on the dosage and the time taken to consume the dose. Also, individual animals respond differently to poison.



Herbicide Information

A herbicide is used to kill unwanted plants. Selective herbicides kill specific targets while leaving the desired crop relatively unharmed. Some of these act by interfering with the growth of the weed and are often synthetic “imitations” of plant hormones.

Brochures Available…

Backpack Sprayer


Full Circle Noxious Weed Control

Herbicide Facts

Herbicide Recommendations

What About Surfactants?

View the flow of procedure when a noxious weed is found  FLOWCHART

Landowners should know this:

Landowners are responsible for controlling noxious weeds on their property, per RCW 17.10.

Noxious weeds” are non-native plants introduced into this area through human action. Because of their aggressive growth and lack of natural enemies, these species can be highly destructive, competitive, or difficult to control by cultural or chemical practices.

Noxious weeds can reduce crop yields, destroy native plant and animal habitat, damage recreational opportunities, clog waterways, decrease property value, poison humans and livestock, and create fire hazards.

“Control” means to prevent all seed production in noxious weeds, and to prevent the dispersal of plant structures which propagate and spread noxious weeds.

A landowner may control noxious weeds by chemical (spraying herbicides); biological (releasing insects); mechanical (tillage, pulling and mowing); and cultural means (planting desirable vegetation, fertilization, overseeding, and using goats or livestock).

If a landowner fails to control noxious weeds, the county may take steps to control the weeds and then charge the landowner for the cost, plus a $500 penalty. If that is not paid, the county will place a lien on the property.

There are 31 noxious weeds found in Lincoln County.

In the state of Washington, the presence of noxious weeds on residential property is considered a property defect and must be disclosed. The parties may want to negotiate the cost of controlling noxious weeds.



The weed board uses an impartial and consistent program. Each owner is required to perform, or cause to be performed; such acts as may be necessary to control and to prevent the spread of noxious weeds on or from his/her land. Penalties for violation are defined by state weed law RCW 17.10 and Chapter 16-750 WAC.

The weed board designates the weed coordinator as enforcement officer pursuant Chapter 7.80 RCW.

The weed board delegates to the weed coordinator the authority to

  1. establish control agreements with owners to ensure compliance;
  2. recommend quarantines to the State Noxious Weed Control Board;
  3. issue Notices of Violation, Notices of Civil Infraction and Criminal Infraction; obtain Search Warrants;
  4. perform or instruct field technician(s) to perform actual control work of noxious weeds for enforcement of RCW 17.10.
  5. The weed board establishes costs for enforcement actions as follows:

There will be an initial enforcement fee of $500.00, plus the cost of actual control work performed, cost of process service and/or postage, cost of providing all enforcement-related notices, cost of travel to site for continued inspections, cost of staff time including preparation of all documentation/photographs/evidence, etc., and any other costs related to the enforcement.

HEARING ON LIABILITY FOR COST OF CONTROL MEASURES. Any owner who has received notice of liability on any cost for control measures undertaken pursuant to RCW 17.10.170 or 17.10.210 shall have the right to request a hearing before the weed board. Such request shall be in writing and presented to the Noxious Weed Control Board within 45 calendar days of the mailing of the notice of liability, as demonstrated by an affidavit of mailing or service, for the charges or costs.

INFORMATION REQUIRED FOR REQUESTING A HEARING. Any request for a hearing must be in writing and include the following:

  1. name, telephone number and mailing address of person requesting hearing.
  2. address and parcel number of property involved and the name and address of property owner if different from person requesting hearing.
  3. a statement of the reason for the request for hearing, including a description of any error of the Noxious Weed Control Board, any rules, regulations, or statutes the hearing request is based upon, and the specific relief that is being requested.

NOTIFICATION OF WEED BOARD HEARING. At least 10 days prior to the hearing, notice of hearing shall be given to the person who has made a request for such a hearing. Such notice shall:

  1. be in writing
  2. state the date, time and location of the hearing
  3. contain a statement that failure to attend or participate in the hearing may result in the issuance of an order of default;
  4. be served upon the person in person or by sending the notice by registered or certified mail to his/her last known address or by any other method authorized or required by the laws of the State of Washington. Service by mail shall be regarded as complete upon deposit in the U.S. mail, properly stamped and addressed, and
  5. at the weed boards discretion, state that materials may be submitted by the parties in advance of the hearing. The notice shall state the number of copies of any such material which must be submitted and the date by which the materials must be submitted to the weed board and all other parties to the hearing.

HEARING PROCEDURE. Weed board hearings shall be open to the public observation. Each hearing is to last no longer than 30 minutes in length. Such hearings shall be recorded. The hearing shall be opened with a statement of the time, date and place of the hearing; and a statement of the purpose of the hearing. The Noxious Weed Control Board coordinator and/or field technician shall present its case, and then the property owner shall present his or her case. The weed board may question either party. The weed board shall allow both parties the opportunity to present witnesses, cross-examine witnesses and present a closing statement or summation. Evidence, exhibits, affidavits, documents and testimony shall be taken in the presence of all parties recorded as present and shall be given only such weight as is deemed proper after consideration of any objections made to their admission. Evidence, including hearsay, is admissible if, in the judgment of the weed board, it is the kind of evidence that reasonable persons are accustomed to rely on in the conduct of their affairs. The weed board may exclude evidence that is irrelevant, immaterial or unduly repetitious. Hearings may be continued to allow additional evidence or testimony to be submitted.

THE WRITTEN DECISION OF THE WEED BOARD shall be served upon the person to whom the notice of administrative hearing was given in the manner set fourth in previous section.

The weed board files liens on an owners property as authorized pursuant to RCW Chapter 17.10, within 90-days of work cessation, if full payment of billing has not been received.

By resolution 8615, the Board of Lincoln County Commissioners has required that all liens on real property be collected by the County Treasurer in the same manner as delinquent real property tax.


Following expiration of the Notice of Violation, the Coordinator may issue a civil infraction. The non-traffic infraction shall be completed with:

  1. The full name of the owner of the land, his/her current residential address, date of birth, date of the violation, site of the infraction and the parcel numbers including the abbreviated legal description.
  2. The penalty of the violation pursuant to the Noxious Weed Civil Infraction Schedule (WAC 16-750-020)
  3. The officers report (attached to the ticket) establishing the specific violation at the specific location on the violation date.
  4. State the designation of the weed and the requirement to control in Lincoln County.
  5. Establish the owners knowledge of the infestation (e.g. contacts with the person cited, correspondence, and proof of receipt of the Notice of Violation).
  6. Cite the failure to control (cite what was ordered in Notice of Violation, the deadline in the Notice of Violation, and the size and severity of infestation observed at the location cited on the violation date).
  7. The date in the officers report is the date of inspection.
  8. Copies of the ticket must be accounted for in accordance with the Sheriffs department procedures.
  9. The Notice of Civil Infraction is delivered by the enforcement officer to District Court who then processes and sends it to the person cited.

RULES AND REGULATIONS for the Lincoln County Noxious Weed Control



Washington Wilderness Hay & Mulch Certificate Program:

~If you are a producer of hay, straw, or other mulching crop product and are interested in participating in the WWHAM program contact us at 509-725-3646 to schedule an inspection.

*Please make sure that you will be harvesting the crop within 7 to 10 day following inspection.

Lincoln County Noxious Weed Control Board’s Coordinator is NAWMA/NAISMA Certified to inspect Hay and Straw fields.

A Certified Inspector will survey your field (s) for all 54 NAWMA listed weed species and the current Washington State Noxious Weed Control List.

Click on link below to learn everything there is to know about the certified weed free Hay and Mulch program…

Washington Wilderness Hay and Mulch Brochure



There are two ways to distinguish certified WWHAM or NAWMA hay and straw bales. A self-adhesive, tamper-proof WWHAM certification tag attached to the bale twine or it will have at least one strand of purple and yellow proprietary twine. For best assurance that you are purchasing a WWHAM product, contact us for a list of WWHAM producers and sellers.

 Preserving the Natural Environment of Lincoln County ~

If we all work together, we can preserve the natural beauty and environment of Lincoln County. Intelligently spraying herbicides, over-seeding with native grasses which need little moisture and care in undeveloped areas, and releasing biocontrols in other areas, will go a long way toward improving the quality of our environment. Help preserve our natural environment so that it can be enjoyed and treasured by our children and grandchildren.

OUR MISSION STATEMENT: The mission of the weed board is to educate landowners to be responsible stewards of the land and resources, to make Lincoln County a better place to live by protecting and preserving all lands and natural resources of the County from the degrading impact of invasive noxious weeds; and to provide quality, timely, and responsive service to the residents of Lincoln County.

Did you know?

Landowners are responsible for controlling noxious weeds on their property, per RCW 17.10.

“Noxious weeds” are non-native plants introduced into this area through human action.
Because of their aggressive growth and lack of natural enemies, these species can be highly
destructive, competitive, or difficult to control by cultural or chemical practices.

Noxious weeds can reduce crop yields, destroy native plant and animal habitat, damage recreational
opportunities, clog waterways, decrease property value, poison humans and livestock,and create fire hazards.

“Control” means to prevent all seed production in noxious weeds, and to prevent the dispersal of plant structures which propagate and spread noxious weeds.

A landowner may control noxious weeds by chemical (spraying herbicides); biological (releasing insects); mechanical (tillage, pulling and mowing); and cultural means (planting desirable vegetation, fertilization, overseeding, and using goats or livestock).

• If a landowner fails to control noxious weeds, the county may take steps to control the weeds and then charge the landowner for the cost, plus a $500 penalty. If that is not paid, the county will place a lien on the property.
• There are 31 noxious weeds found in Lincoln County.

• In the state of Washington, the presence of noxious weeds on residential property is considered a property defect and must be disclosed. The parties may want to negotiate the cost of controlling noxious weeds.


The Lincoln County Noxious Weed Control Board will be performing routine surveys for noxious weed infestations in accordance with the Washington State Noxious Weed Law – RCW 17.10 throughout Lincoln County. Field staff will not drive off of any access roads that lead onto or through landowner properties, access onto properties will be performed with the utmost respect and they will not damage any property while gaining access. If they can’t adequately survey the entire property from the vehicle they will travel on foot to those areas.


There is a Board Member position opening for District #1, which includes the southwest portion of the county. It is bound on the north by the Township 24N; on the west by the Grant County lines; on the east by Range 36E; on the south by Adams County lines. This is a non-paid position, with a 4-year term of office. Interested persons residing in this district must make a written application that includes the signatures of at least ten registered voters residing in their same district supporting their nomination to the board.  If interested call the Weed Board office at 725-3646 to receive an application.


Coordinator: Kevin Hupp

Program Assistant: Kris Hubbard

Field Technician: Gina Habbestad

Program Specialist: Farren Young

Lincoln County Noxious Weed Control Board, PO Box 241 Davenport, WA 99122

Located at 405 Ross St. in Davenport

509-725-3646  Office   509-725-1332  Fax

~Our mission is to help you act as responsible stewards of the land and resources of Lincoln County.

The Lincoln County Noxious Weed Control Board will:

  • Help landowners identify and control noxious weeds. We have brochures and handouts available on each noxious weed. All our information is free.
  • Provide landowners with information and assistance to achieve high rates of weed control and voluntary compliance with state law.
  • Provide landowners with GPS points on maps to indicate the location of noxious weeds on their property.
  • Survey, GPS and map noxious weeds countywide to determine the extent of the noxious weed problem, and to detect weeds at an earlier and more-preventive stage.
  • Provide educational services to the public through publications and exhibits, as well as presentations to schools and civic organizations.
  • Conduct research on the best methods for weed control and eradication in Lincoln County.
  • Meet with landowners on their property for weed walks to identify plants and problem weeds, and to recommend options and solutions.
  • Loan out a 4-gallon backpack sprayer to landowners at no charge. We do require a $100.00 deposit (check only) that is fully refundable when the sprayer is returned in the same condition. Call ahead to make sure a sprayer is available.
  • At a landowners request, provide maps and assistance to commercial sprayers to facilitate weed control on a landowners property. This is especially beneficial to absentee landowners who own vacation property in the county.
  • At a landowners request, release biocontrol insects on property. The landowner will need to buy the insects from a supplier, and we will release the insects at no cost to the landowner. Often, the biocontrols are sent to our office for release, and the bill from the supplier is sent to the landowner. We will GPS and mark where the insects have been released, and monitor their survival and spread in later seasons.
  • Coordinate efforts with other public agencies, such as the USDA, on the release of biocontrols in the county. The USDA sometimes provides biocontrols, at no cost to local landowners.
  • Provide information to landowners on the intelligent use of herbicides. We have updates on the latest research for safety and effective control.
  • Provide information to landowners on alternate means of weed control including over-seeding native grasses and beneficial plants.
  • For prospective home buyers and landowners, share information on past noxious weed infestations so they know what obligations they may be taking on with the purchase of real estate.
  • Conduct an annual pesticide recertification and pre-licensing training seminar each fall. The seminar offers four re-certification credits for those already licensed.
  • Identification of all local plants. If we can’t identify the plant, we have the resources to find out what it is.
  • Protecting Lincoln County from infestations of new noxious weeds is one of our top priorities. We are constantly on the look-out for new invaders.