How to Build a Raised Cedar Planter Box

Transform your outdoor space into a lush, inviting haven with a stunning raised cedar planter box. Not only do these elevated gardens add a touch of elegance, but they also provide excellent drainage, prevent soil erosion, and make gardening more accessible. Here's a comprehensive guide on how to build a raised cedar planter box that's both functional and visually appealing.

Before you start, ensure you have the right tools and materials. You'll need cedar lumber, screws, a drill, a saw, a tape measure, a level, and some exterior wood glue. Cedar is an excellent choice due to its natural rot resistance and attractive appearance. Let's dive into the step-by-step process.

Planning Your Raised Cedar Planter Box

Before you begin construction, plan the size and shape of your planter box. Consider the plants you'll be growing and the available space. A common size is 4' x 8' x 1', but you can adjust these dimensions to suit your needs.

Once you've decided on the size, sketch a simple design including the length, width, height, and any desired features like shelves or drainage holes. Having a clear plan will make the building process smoother.

Gathering Materials and Tools

Based on your plan, calculate the amount of cedar lumber you'll need. You'll typically need four pieces for the length, four for the width, and two for the height. Don't forget to account for screws, exterior wood glue, and any additional materials like drainage gravel or a liner.

Assemble your tools, ensuring you have a drill with the appropriate bits, a saw for cutting the lumber, a tape measure for precise measurements, a level to ensure your box is square, and a pencil for marking cuts.

Cutting the Lumber

Using your saw, cut the cedar lumber according to your plan. For a 4' x 8' x 1' box, you'll need to cut:

• Four pieces at 4' for the length
• Four pieces at 8' for the width
• Two pieces at 1' for the height

Safety first: Always wear protective gear, including safety glasses and gloves, when using power tools.

Assembling the Raised Cedar Planter Box

Now that you have all your pieces cut, it's time to start assembling your planter box. Begin by laying out two of the 4' pieces parallel to each other. These will form the length of your box.

Apply exterior wood glue along the edges of one of the 8' pieces and attach it to the inside of the two 4' pieces, creating a corner. Secure it with screws, driving them in from the outside for a neat finish.

Building the Box

Continue building the box by attaching the remaining 8' pieces to the other ends of the 4' pieces, creating a rectangle. Ensure the box is square by measuring diagonally from corner to corner. If the diagonals are equal, your box is square.

Attach the two 1' pieces to the inside of the box, creating the height. These pieces should be placed about 1" up from the bottom to allow for drainage. Secure them with screws and wood glue.

Adding Drainage and Finishing Touches

Drill several 1/2" holes in the bottom of the box for drainage. If desired, you can also add a layer of gravel or a liner to further improve drainage and prevent soil from washing out.

Sand any rough edges and apply a sealant to protect the wood and enhance its appearance. Allow the sealant to dry completely before filling your planter box with soil and planting.

Stand back and admire your handiwork! Your raised cedar planter box is now ready to transform your outdoor space into a beautiful, thriving garden. Happy planting!