1. Stackable Planter, which being of the type formed from a structure as determined cuvette by a lower base (2), a rear wall (3), two side walls (4) with slots (9) for handling, and a front wall (5), is characterized in that, below the lower base (2) has a transverse strip (6) which it occupies the entire width thereof, and, on top of the two side walls (4 ), they are provided with recesses (7) whose height (h) corresponds approximately to the height (h ') of said transverse strip (6), but having a greater width than the latter, so that, when stacking the boxes (1) , the transverse strip (6) fits in said recesses (7) with a clearance which allows some longitudinal, lateral displacement and angle of the upper planter on the bottom； and that the front wall (5) is formed by inclined forward wall. 2. Stacking Planter according to claim 1, wherein the cross lath (6) is positioned in front of the lower base (2) and the recesses (7) are located in the anterior area of the top of each side wall (4), to match the forward position the batten (6) in the lower base (2). 3. Stacking Planter according to claim 1 or 2, characterized in that, in the rear of the lower base (2) is provided a fulcrum (8) of the same height as the transverse strip (6) creating together this a tripod support for leveling. 4. Stackable Planter according to any of claims 1-3, characterized in that on the front surface of the sloping front wall (5) is provided a framed (5a) suitable to incorporate beautifying or decorative plates. 5. Stackable Planter according to any of claims 1-4, characterized in that is made of reinforced concrete and fiber mesh obtained by mold.
