Sep 30, 2020 · Fall, specifically October and early November, is a key time to chemically control thistles in pastures, both biennial and perennial thistles. Proper identification of thistles is key to picking the proper chemical control.

Oct 12, 2021 · Canada thistle is a creeping perennial that can be controlled with fall spraying, in conjunction with other management options in the spring. While in the rosette stage, thistles are more effectively controlled using herbicides.

Canada thistle is at the correct height about June first (by June 20 thistle is 36 to 48 inches tall in full bloom) and in the fall (September and early October). Removal of low growing tree branches will make directed applications easier and less likely to injure trees.

Control of Canada Thistle in CRP and Other Noncrop Acreage • FNR-436-W Herbicides that are efective on Canada thistle will injure or kill most broadleaf plants (including legumes) and glyphosate will injure or kill grasses. In many areas, spot treatment of Canada thistle provides suicient control of thistle while minimizing

Jan 22, 2025 · Q: Are fall-timed herbicide applications effective for thistle control? Fall applications are extremely effective on thistle rosettes. However, soil residual herbicides may not provide complete control through the next summer.

Aug 28, 2023 · Canada thistle begins to transport assimilates and nutrients down its roots in the fall to survive the winter months. Now is the time to consider a fall herbicide application to keep it under control.

Sep 25, 2015 · While the summer-blooming thistle flower (1a, left) may be the most recognizable growth form, scout now for the small, flat rosette stage (Figure 1b) and treat with herbicides this fall to achieve the most effective control.

Sep 26, 2024 · Herbicide options for pasture thistles during fall, insights on hay price fluctuations due to factors like drought and market conditions, and addressing the impact of dry weather on pasture health and alfalfa harvest timing.

Oct 4, 2022 · It is important to note that fall spraying of thistles is not a silver bullet and effective control often needs repeated applications. It will take several years of timely control before the soil seed bank is reduced. There are many herbicides labeled for thistle control.

Aug 29, 2024 · A fall application of glyphosate and 2,4-D or dicamba, followed by another application in the spring for any missed plants, provides a great start to controlling thistle. This could be a multiyear project to make sure all roots are killed.