Atrazine weed killer helps control both emerged weeds and weeds from seed in St. Augustine grass and Centipede grass. use 5 teaspoons per 1000 sq/ft for control over many tough weeds including henbit, moneywort, pennywort (dollarweed), chickweed, spurge, annual bluegrass (poa annua) dichondra, knotweed, cudweed, florida betony, lespedeza, mustards, vetch, sandspur, smutgrass, spurweed, swinecrest, woodsorrel and various annual clovers. Will also help suppress crabgrass.
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1 quart treats up to 3,720 sq/ft.