Ronstar® FLO

Ronstar® FLO

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.

Works on warm-season turf grasses

  • 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

Pests controlled

Broadleaf weeds:
Bittergrass, bristly oxtongue, carpetweed, cheeseweed, common groundsel, common purslane, evening primrose ragwort, lambsquarters, liverwort, oxalis, Pennsylvania smartweed, prostrate spurge, redroot pigweed, sow thistle, speedwell, spotted catsear, swinecress, yellow woodsorrel


Grassy weeds:
Annual bluegrass, barnyardgrass, carpetgrass, crabgrass, fall panicum, goose grass, green foxtail, wild oats


Please see the product label for a full list of pests.

Labels & Sizes

Ronstar FLO Herbicide 2.5 gallon jug
2 x 2.5-gal. jugs
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