Atrazine is a trusted selective herbicide designed specifically for St. Augustine and centipede grass. It controls many common broadleaf and grassy weeds without harming these sensitive warm-season turf types when used correctly. What It Controls Dollarweed Clover Chickweed Henbit Spurge Florida betony Other listed broadleaf weeds Atrazine is especially effective on winter weeds in southern lawns. When to Apply Late winter to early spring When temperatures are below 85°F When turf is not under drought or heat stress Avoid applying during high summer temperatures. Application Rate Mix 4.33 oz per 500 sq ft using approximately 1 gallon of water per 500 sq ft for even coverage. Apply evenly without overlapping Use a calibrated sprayer for accuracy Do not use hose-end sprayers for precise control Important Notes Do not apply to stressed turf Not labeled for use on all grass types Always follow label directions Atrazine is an excellent choice for southern homeowners managing winter and early-season broadleaf weeds in St. Augustine and centipede lawns.
