Build Your Own DIY Garden Box

Jamie Lott
Written by Jamie Lott
Updated June 30, 2017
Build a DIY garden box to add more space to your landscaping. (Photo courtesy of Jamie Lott/Southern Revival)

Whether space is limited, your soil is lacking or you're looking to dress up your garden space, a DIY garden box is perfect for the job.

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To create your own garden box, you will need:

• (6) 2x4x8 wood, treated• (1) 4x4x12 wood• (2) 10-ft x 26-in 33G corrugated steel roofing panels• Box #9 1-inch roofing screws (for attaching corrugated panels to wood)• Box 3-inch exterior screws• Soil• Plants

Tools:

• Table saw• Miter saw• Reciprocating saw• Tin snips• Drill• 1/4-inch hex bit

Create notches for the 2x4s to rest. (Photo courtesy of Jamie Lott/Southern Revivals)

Step 1: Cut the wood

Cut the 4x4x12 wood into six equal (24-inch) pieces. These will create the four ends and middle braces of your DIY garden box. Use the table saw to create notches to seat the 2x4s.

If your table saw blade doesn't sit high enough, you may need to use a reciprocating saw to finish the cuts.

Finish the cut with a reciprocating saw if necessary. (Photo courtesy of Jamie Lott/Southern Revivals)

Your 4x4s should look like this. Now that they are notched out to accommodate 2x4s, your panels are ready to assemble.

Create notched wood for a garden box. (Photo courtesy of Jamie Lott/Southern Revivals)

Step 2: Construct the sides

Lay one 2x4x8 piece into the 4x4 grooves to form the bottom of one side panel.

The 2x4x8 piece will rest in the grooves. (Photo courtesy of Jamie Lott/Southern Revivals)

Lay another 2x4x8 into the 4x4 grooves to create the top of one side panel.

Side panel of a DIY garden box. (Photo courtesy of Jamie Lott/Southern Revivals)

Screw the panel together using 3-inch exterior screws. Use at least two screws per joint to keep it sturdy. Replicate this process to create the other side of your garden box.

Securely attach sides. (Photo courtesy of Jamie Lott/Southern Revivals)

Step 3: Build the ends

Cut the remaining 2x4s into six 24-inch sections to create the ends of the garden box. Stand the side panels up and, using 3-inch exterior screws, join the side panels together with the 24-inch 2x4 sections to form the ends.

Join side panels. (Photo courtesy of Jamie Lott/Southern Revivals)

Adding a third 2x4 brace on the center of each side will keep the smaller metal panel from bulging, since the sides of it will not be attached to the wood.

Add a brace to keep the side from bulging. (Photo courtesy of Jamie Lott/Southern Revivals)

Step 4: Add corrugated metal sides

Using tin snips, cut a 24-inch section from each of the two 10-foot corrugated metal panels to create both ends of your garden box. Trim 2-inch excess from the tops of all four metal sides. 

Attach the metal siding to the 2x4s using 1-inch roofing screws. These screws are specially designed for attaching metal to wood, and the rubber gaskets will prevent moisture from penetrating the wood through the screw holes.

Use roofing screws to attach corrugated metal siding. (Photo courtesy of Jamie Lott/Southern Revivals)

Attach each 24-inch metal section to either end of the garden box and the remaining 6-foot metal sections to either side.

Attach metal siding for a rustic look. (Photo courtesy of Jamie Lott/Southern Revivals)

Your garden box is done! 

From here you can add things like hardware cloth to line the inside of the bottom to prevent rodents from digging up from underneath. You can also add a watering system to ensure that your garden stays well hydrated.

You may also choose to paint or stain the wood, doing so prior to adding the metal, but it is not necessary and would require maintenance.

Create a rich soil to keep your plants healthy. (Photo courtesy of Jamie Lott/Southern Revivals)

One of the most important points to consider for a successful garden box is the addition of proper soil components. You will be entirely responsible for the nutrients your soil contains. 

To remove any guess work, use a soil specifically designed for container gardens and be sure to amend yearly with compost. Test soil each growing season and amend with any necessary nutrients. 

Fill your garden box with your favorite plants and herbs to enjoy all summer long!

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