Research Updates

Video: Canada Thistle in Spring Wheat Trials

This video shows trials at Montana State University, in which different forage crops and cover crops were planted to learn which were best at suppressing Canada thistle in spring wheat. This research was part of a USDA NIFA OREI funded research project: CREEP Stop: Organic Control of Canada Thistle and Field Bindweed in the Northern Great Plains and Pacific Northwest Regions, led by Patrick Carr of MSU. In the video, Dr. Tim Seipel, MSU Cropland Weed Extension Specialist and Nate Powel-Palm of Cold Springs Organics tour the trials and discuss how alfalfa helped suppress Canada thistle. They also discuss other organic strategies that can help control the spread of perennial weeds as part of an integrated weed management program. Video produced in August, 2023 by Riley Slivka of Agristudios.

CREEP Stop Webinar: Integrated Management of Field Bindweed and Canada Thistle in Organic Cropping Systems

This webinar, which took place in October, 2021, focuses on managing perennial weeds in organic cropping systems using integrated management strategies. We will report on how crop rotations, tillage, and biocontrol can be used in organic systems to reduce field bindweed and Canada thistle. Click here for the slide handout.

Research Updates on Canada Thistle and Bindweed with the Organic Advisory and Education Council

Recordings of presentations by partners on the CREEP STOP project from December 3, 2020. Topics include "CREEP STOP: Progress Report on Our Project to Develop Strategies for Suppression of Creeping Perennial Weeds”, “Bioherbicides: How to get them to work effectively against Canada Thistle and Bindweed, in Montana”, and “Canada Thistle Biocontrol in Organic Cropping Systems.”  Presenters include Pat Carr, Tim Seipel, David Sands, Chelsey Roper, Jed Eberly, Ole Norgaard, and others. Recording available on the Montana Organic Association YouTube channel at