How to I permanently remove thistles from a perennial garden?
I have pulled at least 25 or more large thistles from my garden in the last week and more are still growing....any suggestions.
1 answer
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You need to determine whether you have biennial or perennial thistles, Kerri. Biennial thistles are best controlled as you have been doing. For perennial thistles, the University of Minnesota recommends the use of an herbicide. If their specific recommendations are not available to you in Canada, you would need to ask for a locally available alternative: http://www.extension.umn.edu/yardandgarden/ygbriefs/h525thistle.html
Douglas Hunt
on Jun 05, 2013
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