Flumi T&O Herbicide is a fast acting contact herbicide for use in the management of undesirable aquatic vegetation in slow moving or quiescent waters, to maintain non-crop areas, container and field grown conifers (including Christmas trees) and deciduous trees, around established woody ornamentals in landscapes, conifer and poplar re-forestation sites, and dormant Bermudagrass. Flumi T&O Herbicide is also effective as a preemergence and/or postemergence herbicide for control of selected grass and broadleaf weeds. Flumi T&O Herbicide controls weeds by inhibiting protoporphyrinogen oxidase, an essential enzyme required by plants for chlorophyll biosynthesis.