ND | sampsen - 5/17/2021 20:40 That’s all that kills it here also. Canada Thistle gets resistant to Roundup real fast, the days of relying on glyphosate for control are long gone. I’ve been exclusively using Milestone since its release & now have to really hunt to find thistles. Killing spots on road edges is key.
As far as I have learned Canada thistle is not resistant to roundup. The key to effective control is using RU in later fall when the
plant is taking in nutrients for winter. |
Best chemical for Canadian thistle
