Answer: I'd dig out the current weeds and use a pre emergent weed killer. There are several on the market and the one you choose will depend upon what desireable plants are in the area. Preen is good for perennial gardens, Combat (a corn gluten based product) is good on lawns. While pre emergence products will keep weed seeds from germinating, they won't take care of the current weeds. You'll also want to get something planted in the area - weeds love vacant lots and bare areas in landscapes!
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