Although planting in the ground is fine, building up a garden using brick can improve your gardening experience. Building a brick garden bed allows you to raise the dirt up from the surrounding area. This gives you a longer growing season, allows you to plant early, and allows you to improve the soil in a smaller space, according to Colorado State University. Using brick gives you a permanent, raised gardening space.
Measure out your gardening area and mark the four corners of the space required using stakes and pieces of string tied between them. Make the garden bed no wider than 4 feet so that it can be worked from both sides without stepping onto the soil, says the University of Missouri Extension.
Dig a 16- to 18-inch wide and 6- to 12-inch deep trench along the four sides of the garden bed, suggests the Texas A & M website, and fill the area with cement.
Hammer a 3/8-inch reinforcement bar into the middle of each side of the garden trench and allow the cement to dry for three to four days. Smooth it out using a trowel.
Wet the top of the cement footer and apply a 3/4- to 1-inch layer of mortar along 2 feet of the slab.
Push a brick onto the mortar hard enough so that only a 1/2 inch of mortar is visible under the brick and the footer. Spread mortar onto the side of the next brick and set it 3/8 of an inch away from the first brick and knock it into place using the end of the trowel.
Continue placing down bricks, staggering each layer until the wall is built on each side of the garden. Remove excess mortar using the trowel to keep the wall clean.