Each wing of a rear folding implement has a wing frame supported on rear wheels for movement along the ground, and a forewing frame and wheel pivotally attached to the wing frame. A center ball joint pivotally connects right and left inner wings and a center wheel assembly supports the center ball joint. The wings extend laterally and the forewing frames are in a lowered position supported on their wheels when in the operating position. To move the wings into a transport position, the implement is towed forward and the wings pivot about the center ball joint to trail rearward and the forewing frames are moved upward to narrow the implement for transport. An air seeder cart hitch is rearward of and near the center ball joint in the operating position, and when the wings trail rearward the cart hitch is near rear ends of the trailing wings.