How to Build a Brick Raised Bed

Lay Out Wall

Chalk a guideline to position the bricks on the center of the footing. Make a dry run: Lay out the bricks without mortar, spacing them evenly. This will tell you if you need to insert a short brick near the end of the run. If necessary, increase the spaces to avoid putting in a very small piece of brick. Mark the locations of the first and last brick.

Related: How to Build a Raised Garden Bed For Growing Veggies and Flowers

Set First Bricks

Mix a small batch of mortar. Set the first two bricks, one at each end, laying down a 1-inch-thick bed for each. Check for level in both directions, tapping gently with the handle of your trowel to make adjustments. String a mason's line to mark the level of the first course of bricks. Hold the line in place with bricks.

Lay First Course

To lay down a bed of mortar for a course of bricks, first fully load your trowel. Then, with the trowel faceup, set the tip of the trowel at the beginning of the line. As you pull back toward your body, rotate the trowel so that you lay a bed of mortar about 1-inch thick, nearly as wide as the brick, and about three bricks in length. Furrow the mortar by gently running the trowel tip, facedown, along the center. Bricklayers call this step throwing.

Assemble Corners

Build the lead—the beginning point for your courses. This is six courses high, with each course half of a brick shorter than the one below it. (Remember that a brick is half as wide as it is long.) Level and plumb each course, and use a story pole to check for height. Lay down mortar and add the first course. Butter the end of each brick where it abuts another. Add the mortar by making a swiping motion along all four edges of each face.

Fill Each Course

Duplicate the lead on the other end of the wall. String a mason's line as a course guide, using line blocks to hold the line flush with the face of the bricks. Using the line as a guide, fill in each course, remembering to throw, furrow, and butter. Cut bricks by first scoring a line around the brick. Then crack the brick using a mallet and a brick set.

Check for Level

Continually adjust for level and straight courses, tapping gently with a mallet and 2x4. As you proceed, scrape off excess mortar with your trowel, taking care not to smear the bricks. Every so often, press the mortar with your thumb. If it feels firm and your thumb impression does not change shape, the joints can be finished.

Finish Joints

Using a pointing tool, first smooth out the vertical joints, then the horizontals. Gently brush away excess as you work. Wash any smeared spots carefully with a damp rag -- once the mortar has set, it will be difficult to remove.