Answer: You can use a vegetation killer such as Round Up to kill the grass. Or, you can rototill the area and then rake out the grass and roots. Since you will have to dig or rototill the area to get rid of the grass anyway, why not plan on spreading 3-4 inches of organic matter over the bare soil and digging it in to a depth of 8-10 inches prior to planting your flowers? Amending the soil will loosen it and help it drain well, and will give your new plants an opportunity to thrive. Best wishes with your flower beds!.
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