thistle spraying, fall, thistle foilage, pasture, roadsides
Opportunities for fall spraying have improved considerably with significant precipitation over a wide area. Prior to that, regrowth was slow and growth diminished. Early frost in some areas did not affect Canada thistle foliage and the outlook for warm, sunny weather (60 to 70F) is excellent for response to fall spraying. Best spraying opportunities are for: pasture, roadsides, and CRP that were mowed, grazed, or sprayed with 2,4-D in early season. It is also a good opportunity to have access to fencelines. Guidelines for each are suggested.
Wrage, Leon and Deneke, Darrel, "Fall 2001 Thistle Spraying" (2001). SDSU Extension Extra Archives. 290.
Updated September 2001