Abstract: A reusable planter box with four side panels can be assembled and disassembled with ease, and are still durable enough to accommodate large plants and trees. The side panels of the planter box contain three inserting means on one edge and three receiving means on the second edge that can be brought together to form the connection between the two adjacent panels. These connections are secured by securing means located adjacent to the receiving means and hold the inserting means in place. The connection can be further secured by placing a cotter pin in a horizontal bore through the inserting means preventing the inserting means and receiving means from detaching. The lower part of the planter forms a ledge on which a disposable bottom shelf can be placed. Footings on each panel raise the shelf above the ground, which slows deterioration of the shelf and prevents roots from growing into the ground.