Ronstar herbicide controls weeds through shoots, not roots. So unlike competitive products that don't distinguish between roots of weeds and roots of desirable plants, Ronstar doesn't harm healthy turf. This product can be applied to sensitive grasses and areas where roots are already weakened by winterkill, pests or injury.

One pre-emergent application - even in cold weather, or weeks before seed germination - controls weeds all season long. Offers an environment conducive to sprigging. Doesn't inhibit turf root growth or recovery from damage. Doesn't prevent roots from tacking down.