Interagency Noxious Weed Symposium

Registration is open for the 2026 Oregon Interagency Noxious Weed Symposium.

The Oregon Interagency Noxious Weed Symposium (OINWS) is a biennial event hosted by the Oregon Department of Agriculture Noxious Weed Control Program to provide educational and networking opportunities for natural resources professionals working on invasive plant management in the Northwest.

December 8-10, 2026, at the LaSells Stewart Center, Corvallis

Registration cost:

$325 through November 1
$375 late registration after November 2

Symposium sessions will include:

Updates from other natural resource partners, federal agencies, and ODA Regional staff
Chemical and pesticide application updates
Research and techniques to help in future project planning
Highlights on rangeland health and annual invasive grasses
What’s new in biocontrol, aquatics, and technology
Awards reception to recognize outstanding individuals in the field
Pesticide recertification credits available for Oregon and Washington

For questions about the Noxious Weed Symposium, contact Grace Kline.