Erik from Port St Lucie, Fl writes
Gordons Ornamec Over-The-Top Grass Herbicide will kill St. Augustine turf but would be safe to use around listed established ornamental plants. Torpedo Grass is hard to treat. We are not aware of a product that will treat Torpedo and not harm St. Augustine. You may want to consider spot treating with RoundUp and reseed/resod.
Answer last updated on: 09/20/2017