The present invention relates to a watermelon cultivation framework for growing watermelons in the shape of a cube. Watermelon cultivation frame of the present invention is provided with a plurality of coupling protrusions along one edge, a plurality of coupling holes are formed along the other edge, and has a first to fourth wall plate body provided with an upper plate portion and a lower plate portion at upper and lower edges, respectively. Each wall plate may be arranged in series so that adjacent wall plates are perpendicular to each other, and the engaging projection of one wall plate is configured to be fitted into the engaging hole of another wall plate adjacent thereto. According to the present invention, it is a simple structure that firmly forms a cube-shaped growth space capable of accommodating watermelon fruit in the growing process by growing the cube-shaped watermelon by fitting the first to fourth wall plates and wedges. It is made inexpensive, easy to assemble and disassemble, and the separated first to fourth wallboards can be stacked and transported and stored in a narrow loading space.
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