Eradicating Canada Thistle

kfeliceJune 17, 2006

I have a small wildflower patch in which the Canada thistles were looking rather sickly over the past few years. Each year there seemed to be more and more thistles affected. Thought perhaps that a virus was affectng them. Decided to investigate on line and found this website which might be helpful to anyone with a thistle problem. It's by the University of Wisconsin's College of Agriculture.

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froggy(z4/5 WI)

that is very interesting. Canada Thistle is one of those plants that are insanely difficult to control inside of restorations and plantings.


    Bookmark   June 20, 2006 at 10:34AM
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Here is some new information on a U of M study.

I've been doing my own experiments with pst the past 3 years, which are having modest but promising results. You can find my notes at:

    Bookmark   June 29, 2008 at 7:36PM
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