A modular landscape border system is provided. The modular landscape border system includes a plurality of elongated members having a vertical protrusion extending along opposing lateral sides thereof. The system further includes a connector having a track within each of a first side and a second side thereof, wherein the track is dimensioned to receive the vertical protrusion therethrough. A channel extends through the connector between an upper side thereof and a lower side thereof. The channel is dimensioned to receive a securement spike therethrough, wherein the securement spike is a greater length than a height of the connector, such that a working end of the securement spike engages a ground surface when disposed through the channel.