What is the name of this herb that is also called bishop's weed and carom? This tool even has its own "human" name (Allen!). You can use a brush saw to hedge, prune and clear thick grass that would bog down a string trimmer as well as thick vegetation that even a mower cannot handle. If your blade is not spinning fast enough, not only will it make the job more of a hassle than it should be, you also introduce kick back meaning the blade will kick away from thicker vegetation because it cannot cu...