Mow the area thoroughly to cut the crabgrass and weeds as low as possible. Rake the clippings from the area.
Determine the size and shape of the area to be mulched. Measure the area and section it off with stakes and string. Hose the area so that it is wet, but not soaked.
Lay cardboard sheets on the area. Overlap the sheets and do not leave any soil or weeds exposed. Cover the area completely. Place a .5-inch layer of newspaper on top of the cardboard.
Add a layer of wood chips on top of the newspaper. Layer wood chips approximately 4-inches deep for maximum benefit. Remove the stakes and strings.