• A Professional Organization of Weed Scientists
    Southern Weed Science Society
  • Southern Weed Science Society

    A Professional Organization of Weed Scientists
  • A Professional Organization of Weed Scientists
    Southern Weed Science Society
  • A Professional Organization of Weed Scientists
    Southern Weed Science Society

Weeds of the Midwestern United States and Central Canada

Edited by Charles T. Bryson and Michael S. DeFelice. Principal photography by Arlyn W. Evans and Michael S. DeFelice.
Quick help for identifying and managing potentially problematic plants
Book Details

Weeds of the South

Edited by Charles T. Bryson and Michael S. DeFelice
Quick help for identifying and managing problem plants
Book Details


SWSS 2018 Student Weed Contest was a Success!

We had a blast at this year’s contest and we hope that the participants did as well. We want to give a huge thank you to all of the volunteers who helped put on an amazing event. You can see pictures from the event here.

Click Here:  2018 SWSS Weed Contest Rules

The Summer Newsletter is Coming Soon!

Check out the Spring Newsletter here

Important Annual Meeting Dates:

Meeting Dates:                           February 4 – 7, 2019

Title Submission Opens:           September 3 (Monday)

Submissions Closed for
Papers, posters, & awards :       October 5 (Friday)

Abstracts Due:                          February 1, 2019 (Friday)

Presentations Due:                   February 3, 2019 (Sunday)

2019 Weed Olympics:

Hosted by BASF, Bayer, Corteva, and Valent

Date:                 Thursday, July 25, 2019

Location:          Seymour, Illinois