How to Build Simple Raised Garden Beds

Gardening becomes significantly more manageable when you raise the soil level, sparing your back and giving you absolute control over the quality of your growing medium. A well-built bed separates your plants from the native soil, prevents grass encroachment, and warms up earlier in the spring, extending your growing season by weeks. Building your own is a straightforward project that requires only basic carpentry skills and a single afternoon. When done well, the structure remains square and sturdy through multiple seasons, providing a clean, organized look to your landscape while ensuring your vegetables or flowers have the drainage and aeration they need to thrive.

1. Mark and cut lumber precisely. Cut your cedar or redwood boards to your desired length. Standard beds are 4 feet by 8 feet, which requires two 8-foot boards and two 4-foot boards to complete one layer.
2. Drill pilot holes for strength. Arrange the boards on flat ground to form the rectangle. Use a drill bit slightly smaller than your screws to pre-drill pilot holes through the end of the long boards into the ends of the short boards.
3. Square up the frame tight. Drive three 3-inch exterior structural screws into each corner. Use a level to ensure the boards are sitting flat against each other before fully tightening.
4. Reinforce corners from inside. Cut a 4x4 post into 12-inch stakes. Screw these into the interior corners of the bed to provide structural integrity and a mounting point for future height extensions.
5. Make the ground perfectly level. Clear the grass in your target area and use a shovel to level the ground. Place your assembled frame in position and check it with a spirit level, adjusting the dirt underneath until it sits perfectly flat.
6. Fill and settle the soil. Line the bottom with a double layer of cardboard to suppress weeds. Fill the bed with a mixture of high-quality topsoil, compost, and aged manure.