A flat weed guard cover system is presented which has at least two pieces. Each separate cover has a cut-out section and one or more flaps near the cut-out section. In use, a first weed guard cover is placed around a vertical structure with the structure protruding through the cut-out section and the flaps surrounding the vertical structure. A second cover section is then placed over the first with the vertical structure again protruding through the cut-out section of the second cover and the flaps of the second cover on top of the flaps of the first cover. The flaps may be sealed together by Epoxy glue or any other suitable manner. The edges of the cover may be secured to the ground by means of landscape staples. Different geometric shapes and different positions for the cut-out are also presented. The covers inhibit growth of weeds or other plant material around the vertical structure.