||Weed control is one of the biggest challenges in establishing native warm season grasses. Although Plateau is registered for use on warm season grasses in most states, its use on switchgrass and eastern gamagrass is not recommended. This study compares the effects of Plateau both pre and post emergence with Accent, Basis, 2,4-D Bicep Magnum Lite II (Pre) and mowing on the establishment of switchgrass, eastern gamgrass, big bluestem, indiangrass, and little bluestem. The grasses were planted at the Big Flats Plant Materials Center in Corning, NY on 6/13/01 in a conventionally prepared seedbed. The Plateau pre-emergence treatment had the best weed control and allowed for the adequate establishment of eastern gamagrass, but reduced biomass 41% compared to the Bicep treatment. The other warm season grasses established extremely well with no biomass reduction except switchgrass which did not emerge. The Plateau post emergence treatment killed the switchgrass and eastern gamagrass but had good stands of the other grasses. The Accent and Basis herbicides reduced the vigor of most of the grasses except for little bluestem. The biomass averaged for the Accent and Biomass treatments for the eastern gamagrass, switchgrass, big bluestem, and indiangrass was reduced by 40, 43, 56, and 91% respectively from the best herbicide treatment for that species. Stand density was maintained for all species except indiangrass.