an anchor system for flexible marker posts comprises an anchor that receives a post before the anchor is driven into the ground . in one version of the anchor system , a v - shaped configuration folded along two longitudinal side axes and one lower lateral axis . this version has front and rear plates , and the rear plate has and combines with two flanges to define a narrow pocket that receives the post . the post is secured in the pocket by deforming the pocket with punches . the anchor is retained in the earth by mechanical interference and friction . additional embodiments include plates that are pre - bent into a v - shape , tabs for maintaining separation of the plates , and a one - piece anchor having a v - shaped lower portion and coplanar , horizontal , upper surfaces connected to the upper edges of the lower portion .