2024 Weed Conference

General Information Everything You Need to Know About Weeds at this One Meeting!

The 74th annual Washington State Weed Conference provides information on all aspects of weed control and management. It's one of the largest meetings of its type and covers crops of all kinds, turf and ornamental, and vegetation management.

  • Over 40 Topics & Speakers

  • 15 Recertification Credits applied for from Washington and Oregon

  • 3 Concurrent Sessions

  • Luncheon & Social Hour

  • Trade Show

  • Annual Weed Quiz with Cash Prizes

Agenda 3 Day Program

2023 Agenda - 2024 Agenda Coming Soon!

General Session

9:00 to 9:10 AM

Welcome to the Weed Conference

9:10 to 10:15 AM

Pesticide Applications with Drones

Kurt Beckley, Altitude Agri Services, LLC. 

10:15 to 10:30 AM

Coffee Break

Sponsored by Ag Enterprise Supply

10:30 to 11:45 AM

Conservation Dog Teams for Invasive Species Detection

Heath Smith, Rogue Detection Teams

11:45 to 1:00 PM

Lunch on your own

1:00 to 2:00 PM

Why Worry About Diseases in Vegetation Management: Black Leg of Brassicas as a Case Study

Lindsey de Toit, Washington State University 

2:00 to 2:15 PM


2:15 to 3:10 PM

Weed ID Quiz - Required for all afternoon credits

3:10 to 3:30 PM

Afternoon Break

Sponsored by Alligare

3:30 to 4:20 PM

Wildfires and Why We Control the Annual Grasses with Herbicide Rejuvra

Justin Hossfed, Envu Environmental Science 

4:20 to 5:10 PM

Unlocking the Co-Benefits of Healthy Rangeland

Dr. Harry Quicke, Envu Environmental Science

Crop Session

8:00 to 8:40 AM

A Review of Growth Regular (Group 4) Herbicides

Dr. Joe Yenish, Billings, MT

8:45 to 9:25 AM

Establishing Healthy Native Vegetation to Control Weeds

Kathy Hutton, Plants of the Wild

9:25 to 9:45 AM

Coffee Break

Sponsored by Nufarm

9:50 to 10:30 AM

Weed Management in Conventional and Organic Vegetables

Dr. Alan Schreiber, Agriculture Development Group, Inc. 

10:35 to 11:15 AM

Identifying Invasives in Crop Production

Susan Bird, Yakima County Noxious Weed Board

11:20 to Noon

Kochia, Herbicide Resistance in Weed Research Update

Dr. Rui Liu, Washington State University 

Noon to 1:30 PM


Aquatics Session

1:35 to 2:15 PM

Aquatic Noxious Weeds in Washington State

Ben Peterson, King County Noxious Weed Program 

2:20 to 3:00 PM

Quality Water - Is There Any Left?

Travis Fuller, SePRO

3:00 to 3:20 PM

Afternoon Break

Sponsored by Corteva Agriscience 

3:20 to 4:00 PM

Review of Globally Harmonized System: Labeling and Safety Data Sheets

Timothy King 

4:05 to 4:45 PM

King County Knotweed: How it Started, How it's Going

Sayward Gilse, King County Noxious Weed Control Program 

4:50 PM

Social Hour Sponsored by Wilbur-Ellis Company

Vegetation Management Session

8:00 to 8:40 AM

Show Me The Money! Acquiring Grants for Landscape Scale Conservation Projects

Noe Marymor, Envu Range & Pasture, Greeley, CO

8:45 to 9:25 AM

Wildfires and the Renewed Focus on Weed Mitigation

Tracey Kelly, Norstar Industries

9:25 to 9:45 AM

Coffee Break

Sponsored by Nufarm

9:50 to 10:30 AM

Improving Efficiency in Our Pesticide Application

Don Frantz, Wilbur-Ellis Company 

10:35 to 11:15 AM

Controlling Resistant Kochia with Pre and Post Applied Herbicides

Jon Storr, Nufarm

11:20 to Noon

Sustainability: The Role of Vegetation Managers in Addressing Environmental Issues

Greg Cox, Nutrien Solutions 

Noon to 1:30 PM


1:35 to 2:15 PM

Herbicide Options for Bare Ground Applications and Non-Residual Weed Control

Will Hatler, Corteva Agriscience 

2:20 to 3:00 PM

Weed Control in DNR Natural Areas - Examining the Challenges, Sucesses, and Missed Opportunities

Ethan Coggins, Washington Department of Natural Resources

3:00 to 3:20 PM

Afternoon Break

Sponsored by Corteva Agriscience 

3:20 to 4:00 PM

The Drone Experience

Susan Bird, Yakima County Noxious Weed Board 

4:05 to 4:45 PM

Designing Mixes for Resistance Management in Bare-Ground Programs

Jeff Johnson, Alligare

4:50 PM

Social Hour

Sponsored by Wilbur-Ellis Company

Turf & Ornamental Session

8:00 to 8:40 AM

Thinking Differently about Herbicide Use in Landscapes

Danny Vandecoevering, Envu 

8:45 to 9:25 AM

PBI Gordon

9:25 to 9:45 AM

Coffee Break

Sponsored by Nufarm

9:50 to 10:30 AM

Selecting the Right Herbicide in Turfgrass Situations

Chris Concienne, Helena Agri 

10:35 to 11:15 AM

Post and Pre-emerge Herbicides for Turf and Landscape Settings

Randy Rider, Syngenta Professional Solutions

11:20 to Noon

How Adjuvants Aid in the Landscape

Don Frantz, Wilbur-Ellis Company 

Noon to 1:30 PM


1:35 to 2:15 PM

Herbicide 101 and Updated Technologies

Jake Leiser, Nufarm 

2:20 to 3:00 PM

Getting the Most Out of Your Weed Management Program with Considerations too: Time, Labor and IPM

Colm Allan, Corteva Agriscience 

3:00 to 3:20 PM

Afternoon Coffee Break

Sponsored by Corteva Agriscience 

3:20 to 4:00 PM

Pests of Ornamental Landscapes: What's on the Horizon and What is Already Here

Tim Kohlhauff, Washington State University 

4:05 to 4:45 PM

Best Practices with New Formulations

Dan Salois, PBI-Gordon 

4:50 PM

Social Hour

Sponsored by Wilbur-Ellis Company

General Session

8:00 to 8:10 AM

Officer and Board Election Results

8:10 to 9:00 AM

Vegetation Management to Control Weeds + Help Bees

Andony Melathopoulos, Oregon State University 

9:05 to 9:55 AM

Weeds of Chelan County

Julie Sanderson, Chelan County Noxious Weed Control Board 

9:55 to 10:15 AM

​Morning Break

10:20 to 11:10 AM

Federal Endangered Species Act Impacts on Vegetation Management

Karen Budd-Falen, Budd-Falen Law Offices 

11:10 AM

​Awarding of Door Prizes - Adjournment of Conference

2024 Featured Speakers Sessions Led By Industry Experts


Jennifer Andreas

Jennifer received her Master of Science in Entomology from the University of Idaho in 2004 and has worked in biocontrol since 1998 in Canada, Switzerland, Idaho and Washington.  She joined Washington State University Extension in 2005 and leads the Integrated Weed Control Project (IWCP). The IWCP provides biocontrol education and biocontrol agents to land managers and landowners across Washington State. In addition to this work, Jennifer is chair for the Flowering Rush Biocontrol Consortium, co-chair for the Columbia Basin CWMA, member of NAISMA's Classical Biological Control Committee, and conducts research for several weed-biocontrol systems. 

Tina Zimmerman

Christina Zimmerman

Christina is the program manager for the Licensing & Recertification Program at Washington State Department of Agriculture, supervising the licensure and continued certification of pesticide applicators, pesticide distributors, consultants, and structural pest inspectors. She has been with the agency for 7 years. Before that, she worked at the Hawaii Department of Agriculture, Pesticides Brang, for 12 years int he Pesticide Registration & Technical Review Unit, overseeing pesticide registration, Special Local Need registrations, emergency exemptions, experimental use permits, and the Branche's groundwater review process. 

More Speakers Coming Soon!

Sponsors & Exhibitors Thanks to Our Corporate Supporters!

Location & Hotel Where to Stay

Wenatchee Center

Wenatchee Convention Center

121 N Wenatchee Ave
Wenatchee, WA 98801

These hotels are convenient to the Convention Center. Please specify you are with the Washington State Weed Association.

The Coast Wenatchee Center Hotel

201 N. Wenatchee Ave.

$107 / night single

Red Lion Wenatchee

1225 N. Wenatchee Ave.

$100 / night single
Special Rate Code: WSWA2022

Hilton Garden Inn

25 N. Worthen Street

$107 / night single or double

Best Western PLUS

1017 N. Wenatchee Ave. 

$92/ night 

(509) 662-1700

Get Answers Frequently Asked Questions

Get Registered Online & In-Person Registration

Registration is Now Open!

Registration includes all meetings and workshops, Thursday luncheon, social hour, and abstract of material presented by various speakers.

Low-Cost Registration Fee

Before or on October 26: $200 / person
After October 26: $250 / person
Online Only Option: $150 / person

Mail / Fax

If you would rather register by mail or fax, please download our registration form PDF and mail payment to:

Washington Weed Conference
P.O. Box 5021
Benton City, WA 99320

or fax the form to (509) 288-4771

1Contact Information
2In-Person Registration
3Online Registration

Contact Information


Please Note: Refunds are issued upon request up to one week prior to the first day of the conference. Requests after that date are non-refundable.