An apparatus for forming a landscape system comprising a plurality of system members which edge and retain fill material and facilitate landscaping. Each system member includes a base plate, a front portion, a connecting member and an accepting member. The base plate includes a top surface, a bottom surface, a proximal end and a distal end. The base plate is configured to be substantially held in place by the fill material. The front portion includes a first side, a second side, an upper side and a lower side. The first side includes a first receiving member which is capable of releasable mating engagement with a second receiving member of another of the plurality of system members, and, the second side includes such a second receiving member capable of releasable mating engagement with a first receiving member of another of the system members. Such attachment facilitates horizontal engagement. The connecting member is capable of attachment with the accepting member of another of the plurality of system members, to, in turn, facilitate vertical engagement of the system members.