2025 Weed Conference

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

The 75th 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

2024 Agenda - 2025 Schedule Coming Soon

General Session

9:00 to 9:10 AM

Welcome to the Weed Conference

9:10 to 10:00 AM

What's Happening in State and Federal Pesticide Policies

Billy Olesen, Washington State Pest Management Association/PestStop

10:15 to 10:15 AM

Coffee Break

Sponsored by Ag Enterprise Supply

10:15 to 11:05 AM

Adding Technology to Application Equipment, Calibration, and Documentation

Ryan Kuster, Ag Enterprise Supply

11:10 to Noon

WSDA Stone Fruit and Grape Commodity Survey: What is at Stake?

Joshua Milnes, Washington State Dept. of Agriculture 

Noon to 1:30 PM

Lunch on Your Own

1:30 to 2:20 PM

Biocontrol of Weeds: What's New and Does it Make Sense for You?

Jennifer Andreas, Washington State University

2:20 to 3:10 PM

Awards & Scholarships

3:10 to 4:00 PM

WSNWCB Update and Weed ID Quiz - Required for all afternoon credits

Mary Fee, Washington State Noxious Weed Control Board

4:00 to 4:15 PM

Afternoon Break - Sponsored by WA State Dept. of Labor and Industries

4:15 to 5:05 PM

Changes to the Certification of Pesticide Applicators Rule: What to Expect in Washington State

Christina Zimmerman, Washington State Dept. of Agriculture 

Crop Session

8:00 to 8:40 AM

Vegetation Management Utilizing UAV Technology

Kurt Beckley, Altitude Agri Services, LLC. 

8:45 to 9:25 AM

Biologicals: How They Work and the Benefits for Crop Performance

Orlando Tapia, Corteva Biologicals 

9:25 to 9:45 AM

Coffee Break

Sponsored by Envu

9:50 to 10:30 AM

Weed Control in Onion Production

Dr. Rui Liu, Washington State University 

10:35 to 11:15 AM

Keeping Accurate Chemical Application Records with GPS Spray Mapping

Jeremy Zerr, SpraySync

11:20 to Noon

The Role of Glyphosate in Canola Production and Ways to Mitigate Stress

Dr. Steve Van Vleet, Washington State University 

Noon to 1:30 PM

Lunch

Aquatics Session

1:35 to 2:15 PM

Quagga Mussels: A Threat to People and Salmon

Travis Fuller, SePRO

2:20 to 3:00 PM

Washington State Aquatic Invasive Plant Identification

Wesley Glisson, Washington State Department of Ecology 

3:00 to 3:20 PM

Afternoon Break

Sponsored by Corteva Agriscience 

3:20 to 4:00 PM

Integrated Pest Management of Rid Mariners Village Lake of Brazilian Elodea

Taryn Hesketh, City of Richmond, BC 

4:05 to 4:45 PM

Bottoms Up! Reducing Salmon Predation Through Aquatic Weed Management

David Kyle, Trout Unlimited 

4:50 PM

Social Hour Sponsored by Wilbur-Ellis Company

Vegetation Management Session

8:00 to 8:40 AM

Turn Around, Look Around - Considerations in Herbicide Applications in Various Use Sites

Jerome Otto, Corteva Agriscience 

8:45 to 9:25 AM

Weed Management for Roadside Fire Breaks and Buffer Zones

Dr. George Beck, Alligare, LLC

9:25 to 9:45 AM

Coffee Break

Sponsored by Envu

9:50 to 10:30 AM

How We Are Progressing Weed Management with Drones

Katharyne Sample, Central Washington Land Restoration Services

10:35 to 11:15 AM

Escaped Ornamentals Become Noxious Weeds

Susan Bird, Yakima County Weed Board

11:20 to Noon

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

Sayward Glise, King County Noxious Weed Control Program

Noon to 1:30 PM

Luncheon

1:35 to 2:15 PM

Nufarm XHL Formulations and Tank Mixing to Increase Control of Invasive Weeds

Jon Storr, Nufarm Americas 

2:20 to 3:00 PM

Improving Efficacy in Our Pesticide Applications

Don Frantz, Wilbur-Ellis Company 

3:00 to 3:20 PM

Afternoon Break

Sponsored by Corteva Agriscience 

3:20 to 4:00 PM

Measuring and Applying Dry Herbicide Products Correctly to the Right Weeds

Jerry Ellis, Envu

4:05 to 4:45 PM

Washington's Integrated Approach to Preventing and Addressing Invasive Species

Stephanie Helms and Maria Marlin, Washington Invasive Species Council 

4:50 PM

Social Hour

Sponsored by Wilbur-Ellis Company

Turf & Ornamental Session

8:00 to 8:40 AM

Optimizing Plant Health to Reduce Pesticides

Kevin Hicks, Earthworks Carbon Based Fertility

8:45 to 9:25 AM

Pests of Drought Stressed Plants

Tim Kohlhauff, WSU

9:25 to 9:45 AM

Coffee Break

Sponsored by Envu

9:50 to 10:30 AM

Sprayer Calibration and Technology

Ryan Kuster, Ag Enterprise Supply, Inc. 

10:35 to 11:15 AM

New Herbicide Options for Annual Bluegrass

Jake Leiser, Nufarm

11:20 to Noon

Improving Efficacy in Our Pesticide Applications

Don Frantz, Wilbur-Ellis Company

Noon to 1:30 PM

Luncheon

1:35 to 2:15 PM

Turf Weed ID, Life Cycle, Best Spray Timing for Control Using Foundation and Desperado Turf Herbicides, Managing Deposition and Customer Expectations

Tim Magney, Wilbur-Ellis Company 

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

Thinking Differently About Weed Control in Landscapes

Danny Vandecoevering, Envu

4:05 to 4:45 PM

Controlling Difficult Broadleaf and Grassy Weeds in Turfgrass

Chris Concienne, Helena Agri Enterprises 

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

Nozzle Technology and Droplet Size Management

Mike Powers, TEEJET Technologies

9:05 to 9:55 AM

Importance of Knowing Your Target & Non-Target Species

Susan Bird, Yakima County Weed Board

9:55 to 10:15 AM

​Morning Break

Sponsored by Nufarm Americas 

10:20 to 11:10 AM

Vegetation Management Panel Discussion/Round Table Herbicide Q&A

11:10 AM

​Awarding of Door Prizes - Adjournment of Conference

2024 Featured Speakers Sessions Led By Industry Experts

Jenn_Andreas_pic

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 Branch, for 12 years in the Pesticide Registration & Technical Review Unit, overseeing pesticide registration, Special Local Need registrations, emergency exemptions, experimental use permits, and the Branch'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.

$110 / night single

Hilton Garden Inn

25 N. Worthen Street

$110 / night single or double

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

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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.