Canadian Thistle control
Asked June 13, 2018, 6:13 PM EDT
We are having difficulty controlling Canadian Thistle with Roundup. Do you have another weed spray you recommend? How about using goats?
Park County Colorado
The active ingredient in roundup is not ideal for canada thistle control. I also don't think goat grazing is going to adequately control it either...not a pleasant eating experience for them.
We have a good fact sheet available at http://extension.colostate.edu/topic-areas/natural-resources/canada-thistle-3-108/ that goes into several control options for canada thistle, including some better choices for herbicides.
I hope this is helpful!