How do I get rid of torpedo grass?
Also, what will kill torpedo grass?
Glyphosphate: (such as Roundup) is considered the most effective herbicide against torpedo grass, though it kills lawn grass and other plants, too. Protect Waterways: Torpedo grass often grows near and in water. Never use herbicides if the spray can come into contact with waterways.
Similarly, you may ask, does Atrazine kill torpedo grass?
No herbicides can selectively control torpedograss, bermudagrass and most other grassy weed in St. Augustinegrass. You can kill patches of grassy weeds that grow in summer with glyphosate (keep this off the desirable grass as much as possible).
Because it's so tough and persistent, most professionals and homeowners use an herbicide (generally glyphosate) to kill it. They spray, strip off the dying sod, irrigate to generate growth of any surviving rhizomes, and then repeat the process at least once (one treatment rarely kills a Bermuda lawn).