How to Make a Garden Box

The Best Garden Box Design

My wife asked me this year to build her a garden box. She wanted to grow a garden and teach our kids about how things grow. I remember having a rather large garden as a kid. I always hated having to weed it and I personally have a disdain toward garden boxes. I don’t think I have ever seen a garden box that I liked. They all seem to weather and look bad over time. This gave me the opportunity to challenge my attitude and perspective on garden boxes.

Watch the Video

Here is a video showing how I built the garden box. If you haven’t already please subscribe to my YouTube Channel, I post additional information about the projects I am working on there.

Materials

  • Two 1x10x8 Cedar Boards
  • Two 1x10x4 Cedar Boards
  • One 4x4x6 Pressure Treated Lumber
  • One box of outdoor hex screws
  • One Roll of Weed Cover Fabric
    Cedar boards, screws, weed fabric

    Tools

    Step 1

    I did some prep work before I assembled my garden box.  I first had to scout a location in my back yard that got the right amount of sun. Next, I prepped my materials before I assembled them. I pre-cut the corner posts and stained the ceder boards.

    Prepped materials for installation of the cedar garden box

    Step 2

    Next came assembly, this was rather easy because all I needed to do was screw the boards into the four posts. However this later became a challenge because I had forgotten to compensate for the ground and its sloap.

    Leveling the cedar garden box

    Step 3

    I compensated for my uneven ground by using leftover cedar boards to jack up and level the garden box.

    Leveling the cedar garden box

    Step 4

    Next, I added the garden fabric to keep the weeds from growing because I didn’t want to have to relive my childhood of weeding the garden.f

    Cedar garden box with the weed control fabric

    Step 5

    When building a garden box I would recommend adding a lip or and edge to the box. This is important because it will help keep the dirt in the box as well as provide your box with a nice added detail.

    Adding the Cedar Edge to the Garden Box

    Step 6

    Take a look at the bottom left corner of the garden box in the picture below. You can see that I added some additional boards to compensate for the uneven ground. This is important because it solves two problems. The first is that it gives your box a completed built-in feel. Second, it prevents the dirt from seeping out the bottom. I also stained the cedar with one more coat of stain. I would recommend apply an outdoor polyurethane, this will protect your stain and wood from sun and water damage. I consider the outdoor polyurethane as my secret sauce, this will prevent the box from weathering and looking bad.

    Completed cedar garden box

    Step 7

    Finally when the box is complete you simply need to fill the box with good quality dirt and plant your seeds.

    Cedar Garden Box

    I ended up building two boxes. The second one is a bit bigger.

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