The Canadian Weed Science Society / Société Canadienne de Malherbologie is made up of professionals from university, government, and industry who specialize in research, teaching, extension, and regulation of weed-related topics.


La Canadian Weed Science Society / Société Canadienne de Malherbologie est constituée de professionnels issus d’universités, du gouvernement et de l’industrie qui se spécialisent dans la recherche, l’enseignement, la diffusion et la réglementation des sujets liés aux mauvaises herbes.


This year, CWSS-SCM will be holding its 74th annual meeting November 23rd to 27th, 2020 through a virtual conference. The theme of this years’ plenary session is ‘Weeds and invasive plants in Canada: past, present and future.’ Registration for the conference will stay open until Novemeber 30, 2020, allowing anyone to participate in the conference and view presentations during or after the conference. Pre-recorded presentations will become available the week of November 16th, 2020 for participants to view at their leisure prior to the active part of the conference. Specific times will be allotted during the meeting for live discussions on presented topics and for opportunities to connect and network. A full program with all the abstracts will be available online prior to the conference.


Conference Fees


Canadian Student    

$25 + GST

Non-Canadian Student     $ 25 (No GST)
Canadian Participants- Full Registration**     $ 175 + GST
Non-Canadian Participants- Full Registration     $175 (No GST)
Retired CWSS-SCM Members Free

** Option available for Canadian Government Employees to have GST exempt 



Important Deadlines




October 1, 2020

Scholarships and Awards deadlines:

  • Graduate Student Scholarships

  • CWSS-SCM Outstanding Industry Member Award

  • Excellence in Weed Science Award

  • CWSS-SCM Fellow

  • CWSS-SCM Meritorious Service

  • Excellence in Weed Extension Award

October 9, 2020

Title submission deadline for all presentations including graduate student presentations and posters

October 12, 2020

CWSS-SCM Virtual Meeting Open for Sponsors

October 30, 2020

90% of fee returned if cancellation received by October 30, 2020; no refund if notification received after October 30, 2020 but registration can be transferred to another individual from the same organization

October 30, 2020

Abstract submission deadline for all presentations including graduate student presentations, reports, and posters

October 30, 2020

Photo contest deadline

November 14, 2020

Deadline for poster and presentation submissions

November 16, 2020

Open CWSS-SCM Virtual Meeting for Preview of Conference Presentations


November 23-27 2020

August 13, 2020 00:00 EDT to November 30, 2021 00:00 EST
Virtual Poster
September 14, 2020 00:00 EDT to November 14, 2020 00:15 EST
Virtual Presentation
August 8, 2020 00:00 EDT to November 14, 2020 00:15 EST
Contact organizers