Answer: You can cover the area with clear plastic to kill the existing weeds and weed seeds in the top few inches of soil. Another method of suppressing weeds is to lay an organic mulch over the bare soil to keep sunlight from penetrating, and keep weed seeds from sprouting. If you apply 3-4 inches of compost, leaf mold, or other organic material now, you can move it to the side when you plant your new flowers in the spring. Or, you can turn it into the soil, plant, and then add more mulch material in the spring. Either way your new flower border should present fewer weed problems next spring and summer.
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