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How to Build a Brick Planter Box

By Ann White ; Updated September 21, 2017

Permanent, weather-resistant and thief-resistant garden planters are great choices for front and backyards. With a plentiful selection of colors and shapes of bricks, these lovely planters can be customized to fit any gardener's decorating preferences. If placing the planter against a wall, consider using a waterproof barrier to prevent any damage to the structure.

Dig a 6-inch-deep by 3-inch-wide trench around the parameter of where the planter will be built. Sprinkle sand at the bottom of the trench.

Read the mixing instructions on the cement carefully and prepare the cement. Using a shovel, fill the trench to the top with cement. Flatten the cement with the spade to create an even surface.

Check the surface with a level to verify that all sides are even. If one portion is too low, add some additional cement to even out the trough. Allow the cement to dry for 24 hours.

Carefully read the directions on the mortar and prepare the first bag of mortar. Place a 1-inch layer of mortar under each bottom brick and lay the brick firmly on top. Space each brick a half inch apart and fill the gap with mortar making sure to carefully smooth the mortar and avoiding drips. Continue working around the entire cement perimeter until the first row is complete. If the mortar becomes too thick while working around the perimeter, add small amounts of water to maintain the consistency of dough.

Place the second layer so that it covers the space where the first-row bricks met. Place a quarter-inch layer of mortar under each brick and carefully press down. Brush off any drips immediately as they are more difficult to remove once the mortar has hardened. Space the bricks as before and continue around. Repeat this step until your desired height is achieved. Allow the bed to dry for 48 hours before filling.

Fill the bed with potting soil, leaving at least a half inch of space at the top.


Things You Will Need

  • Bricks
  • Mortar
  • Cement
  • Shovel
  • Sand
  • Spade
  • Potting soil
  • Level

About the Author


Ann White is a freelance journalist with prior experience as a Corporate and Business Attorney and Family Law Mediator. She has written for multiple university newspapers and has published over 300 articles for publishers such as EHow and Garden Guides. White earned her Juris Doctor from Thomas Jefferson School of Law and a Bachelor of Arts in English literature.