Design a Concrete Planter
Form the sides of the planter. On a flat surface, place four 12X12-inch (30x30-cm) or 8X16-inch (20x40-cm) pavers on edge to form a square. Tilt one paver over and lay a bead of landscape-block adhesive along each mating side. Then replace the paver. Do the same to the paver on the opposite side of the square. All four seams of the square should now be adhered. Make any needed adjustments to ensure that the pavers form a true square.
Add the bottom. Apply adhesive along the upward-facing edges of the planter in a drop pattern rather than a solid bead. This will create small channels for drainage. Then place one 12X12-inch (30x30-cm) or two 8X16-inch (20x40-cm) pavers on top to form the bottom. Allow the adhesive to harden for at least 24 hours before moving the planter.
Move the planter into position and fill it with potting mix; then plant your favorite ornamentals.
And your done...now its time to enjoy your pot!