A connection securing a geogrid fabric to between two tiers of stacked concrete blocks which form an earth retaining wall. A groove is formed in the top of each block in the lower tier to extend across the width of the block with grooves in adjacent blocks aligned. The groove is slightly wider that the rod and fabric wrapped around the rod and is deeper than its width. The fabric extends from backfill behind the wall over the groove. A rod is positioned over the fabric above the groove and pushed into the groove. A free end of the fabric wraps around the rod and extends from the groove towards the rear of the block. A wedge is positioned in the groove above the fabric and rod. When an upper tier of blocks is stacked on the lower tier, the rod and fabric are locked into the groove.