Answer: You can use Vigoro Ultra Turf Crabgrass Preventer. It keeps crabgrass seeds and other grassy weeds from germinating. Crabgrass Preventer with Dimension? keeps on killing crabgrass up to 4 weeks after it sprouts. Dimension? also prevents the sprouting of many broadleaf weeds, such as spurge, chickweed, and henbit.
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