Agriculture Research Service, as well as university agricultural research centers. Herbicides may be required for aggressive species and species that create underground suckers from mechanical treatments. These species include sumac, black locust, leafy spurge, and Canadian thistle. This is especially true for areas without available grazing or mowing capability or lack of labor to administer repeated mechanical treatments. Spraying causes damage to adjacent plants by drift and should be avoided or used with extreme caution.
Research regarding herbicide effects on high quality prairies is sparse.
Caution should always be taken when using herbicides. Name the herbicide, mode of applicator, species and area to be treated, time of application, and names of persons who will be applying the herbicide. Read the directions supplied with the chemical . Roundup - Roundup apparently is broken down quickly and doesn't translocate to other species through the soil, which makes it a preferred herbicide. Adjacent plants will die if there is direct root to root contact.