A bed divider comprises a tubular separation member and a thin flange. The flange is joined to the tubular separation member and is tangent thereto. The flange is cut transversely with several scissors cuts or notches to create a number of tabs. Adjacent tabs can be overlapped along the separation member to enable the side of the separation member adjacent the tabs to be bent into a concave curve. In a modified embodiment, a short neck is interposed between the flange and the separation member. The neck lies in a plane that is at an angle to the plane of the flange and that passes toward the longitudinal centerline of the separation member. The bed divider is installed by laying the flange horizontally on the ground and staking it in place.