Phoenix Environmental Care has added Rook herbicide to its line of plant protection products. Rook is a fast-acting, low-odor formulation of quinclorac. This postemergence herbicide controls emerging grassy and broadleaf weeds, such as dandelions and clovers. It is absorbed quickly into plants and is rainfast within one hour of application. It is approved for use on golf courses, sports fields, lawns, landscapes and sod farms. It delivers residual control for up to 45 days and can be used with other Phoenix Environmental Care herbicides to extend control further.