Fertilome Decimate Weed and Grass Killer should only be applied in the following areas: airports, alleys, lanes, paths, trails, access roads, around commercial or industrial structures, around the farm, around ornamental gardens, bare ground, beaches, campgrounds, construction sites, ditch banks, driveways and ramps, dry ditches and canals as directed. You can use a product like Opti Amine 2,4-D Amine Herbicide instead to control water lilies. Aquatic weed control instructions are listed on page 20 of the product label.
