Abstract: Lawn and garden edging segments for end-to-end adjacent installation on an outdoor ground surface, with each edging segment comprising an elongate member having a pair of laterally extending arms defining separate sides of the edging segments and extending along the elongate length of the edging segments. The arms each include a lower wall, an upper wall on a top side of the edging segment and an edge wall. A lower projecting member extends outwardly from a bottom side of the edging segment between the lower walls of the arms the projecting member extending beyond planes defined by the lower walls. The edging segments are configured for installation such that the projecting members are positioned within a groove formed in the ground with the lower walls of the arms extending outwardly adjacent the groove.