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County Weed Board

The Columbia County Weed Board, located in the County Extension Office, provides information and resources concerning weeds within Columbia County. Regular board meetings are the last  Wednesday of the month.  Regular board meetings are held at 137 East Main Street, Dayton WA  99328

Weed Board Coordinator, Rachel Hutchens

Board Members include

  • Rick Turner, President
  • Josh Bowen, Vice President
  • Bill Warren, Secretary
  • Clayton McKinley, Director
  • Matt Talbott, Director

2019 CCWB Annual Meeting

Come participate in our Noxious Weed Control Board Annual Meeting on January 24, 2019.  Registration opens at 8:30 a.m. and the presentations begin at 9:00 a.m.  This meeting will provide 6 WSDA Pesticide License re-certification credits.  We hope to provide CEU’s as well.  The meeting is FREE and includes lunch and refreshments!  See you there!

Annual Meeting Agenda 2019

Weed Board Coordinator Position-Open until filled

The Columbia County Weed Board is accepting applications for a part time Weed Board Coordinator. Applications and job description can be obtained from the Weed Board Office, 137 East Main St., Dayton, WA 99328, or at  Call with questions at 509-382-9760. Applications will be received until January 3, 2019 at 12:00 p.m. Columbia County is an equal opportunity employer.

2019 Yellow Starthistle Program

The Weed Board will accept applications for the 2019 Spring Yellow Starthistle program between the dates of January 24, 2019 through February 26, 2019.  Please see the  PROGRAM GUIDELINES below for chemical and aerial rates.

Submit your application via email at, or in person at 137 East Main Street, Dayton WA  99328.  Call with any questions.

2019 spring YST App Revised—Find your application here.

2019 spring YST Letter Revised–View all program details and guidelines here.

Bio Application 2019



Mediterranean Sage


Mediterranean sage is a designated as a Class A weed by the Washington State Noxious Weed Control Board. It is an aggressive species that is not palatable and out-competes desirable forage plants in dry pastures and range-lands. Mediterranean sage reproduces by seed and acts like a tumbleweed to disperse its seeds.

The Columbia County Weed Board offers a cost share program for the control of Mediterranean sage in Columbia County. Please see the application for chemical control of Mediterranean sage below:

2017 cost share applications-med sage

Mediterranean sage 1
Mediterranean sage is full bloom

Grant Awarded to the Columbia County Weed Board to Control Med Sage

The Weed Board has received a $4,000.00 grant to control Mediterranean Sage in Columbia County.  We will be focusing on five sites where Mediterranean sage is currently growing.  This project will be completed by June 30, 2018.

For more information about this project, contact Rachel Hutchens at 509-382-9760.


Mediterranean sage 2
Mediterranean sage rosettes

Noxious Weed Disposal

knotweed growing through pavement

When controlling weeds, proper disposal is very important. Depending on the plant species, growth stage, and quantity, disposal methods can vary.

In general, if plants are flowering, cut and bag flowers when possible to prevent seed development and dispersal.  Seal bags and put them in the trash.  If plants are NOT flowering and do not spread vegetatively, the plants may be able to be pulled up by the roots and left on the ground to dry out.

Check out this publication for all the specifics about how to dispose of noxious weeds.

45 gallon lawn trash bag holding seeds

Not sure what kind of plant you have?  Call or stop by the office to have the weed identified before you begin to control it.  Identifying the weed will insure that you are disposing of the weed correctly.

Cost sharing for Class “B” Weeds

The Weed Board offers cost sharing for two other Class B weeds other than Yellow Starthistle. Those weeds are Japanese/Bohemian Knotweed and Leafy Spurge.

Knotweed     leafy spurge

Reimbursement for the control of Japanese/Bohemian knotweed and Leafy spurge in 2017 is as follows:

  1. 100% of herbicide cost the first treatment year.
  2. 75% of herbicide cost where treatment is needed the second season.
  3. In year 3 and following years, herbicide cost share will be evaluated on a case by case basis.
  4. Owners/operator is responsible for 100% of application costs for a

2018 Meeting Dates

January 31, 2018–12:00 p.m.

February 28, 2018–12:00 p.m.

March 28, 2018–7:00 p.m.

April 25, 2018–7:00 p.m. **Rescheduled for May 2, 2018**

May 30, 2018–7:00 p.m.

June 27, 2018–7:00 p.m

July–No meeting

August–No meeting

September 26, 2018–7:00 p.m.

October 31, 2018–7:00 p.m.

November 28, 2018–12:00 p.m.

December 26, 2018–12:00 p.m. **Rescheduled for December 19th, 2018 at 12:00 p.m.