Ronstar brand oxadiazon is a preemergent herbicide that controls a variety of annual broadleaf and annual grass weeds. Offering a conducive environment for sprigging, Ronstar controls weeds through their shoots rather than their roots, so it won't harm turfgrass roots in the process. In fact, Ronstar can be used for long residual pre-emergent weed control even in areas that may need to be sprigged or where turfgrass roots are already weakened due to pest, mechanical or other damage.

Ronstar provides pre-emergent control of goosegrass, crabgrass, annual bluegrass and other tough turf weeds, such as annual sedge. The new formulation is registered for use on dormant established bermudagrass, zoysiagrass and St. Augustinegrass. Research trials conducted in multiple states on both university plots and golf courses during 2006 and 2007 showed the product performed well compared to other herbicide brands.