Having an issue with horsetail, milkweed and canada thistle. Liberty seems to control them pretty good in canola but in the cereals there doesn't seem to be much that works especially for the horsetail. Thinking about tilling up the bad areas this fall to see if that helps. Have been told that tillage spreads horsetail around but chemicals don't seem to have any effect. I'm about out of ideas so anyone suggestions from people with experience will be appreciated.