The worse approach you can use is tilling. Just as with Bermudagrass, tilling nutsedge has the opposite of the desired effect. Instead of killing the pest, it simply spreads out pieces to where they can gain new toeholds.

Control of nutsedge in vegetable and ornamental beds starts with the bed itself. Nutsedge loves poor, soggy soil. You can weaken its hold by building your beds to drain well and keeping them fertile.

Herbicides sold to control grasses and grassy weeds do not work on the weed we call nut grass. That?EUR??,,????'?????<

Chemicals are sold to help control nutsedge. The killer ingredient often used is imazaquin. Before you make any investment is such a chemical, read the label carefully and completely, especially the part about not getting it on you and not using the product in vegetable gardens or where annuals will be planted within the next year.