How To Make A Wooden Planter Box

Build a square planter box from cedar TwoFeetFirst Diy wood
Build a square planter box from cedar TwoFeetFirst Diy wood from

How to Make a Wooden Planter Box

Wooden planter boxes are a great way to add beauty and functionality to your garden or outdoor space. Whether you want to grow flowers, herbs, or vegetables, a wooden planter box can provide the perfect environment for your plants to thrive. This article will guide you through the process of making a wooden planter box, from choosing the right materials to assembling the box and adding finishing touches.

Materials Needed

Before you start building your wooden planter box, gather the following materials:

  • Wood boards (cedar, redwood, or pressure-treated pine are good choices)
  • Screws or nails
  • Drill or hammer
  • Saw
  • Tape measure
  • Pencil
  • Sandpaper
  • Exterior wood stain or paint (optional)
  • Plastic liner or landscape fabric
  • Potting soil
  • Plants

Step-by-Step Instructions

1. Measure and Cut the Wood

Start by measuring and cutting the wood boards to the desired length and width of your planter box. The size will depend on the space available and the plants you want to grow. A common size for a planter box is around 2 feet long, 1 foot wide, and 1 foot deep. Use a saw to make precise cuts.

2. Assemble the Box

Next, assemble the box by attaching the boards together. You can use screws or nails to secure the corners. If using screws, pre-drill the holes to prevent splitting. Make sure the corners are square and the sides are level. You may want to use clamps to hold the boards in place while assembling.

3. Sand and Finish the Box

Once the box is assembled, sand the surfaces to remove any rough edges or splinters. This will also help the stain or paint adhere better if you choose to apply a finish. Wipe away any dust with a clean cloth before moving on to the next step.

4. Line the Box

To prevent the wood from rotting, line the inside of the planter box with a plastic liner or landscape fabric. This will create a barrier between the soil and the wood, allowing for proper drainage while protecting the wood from moisture.

5. Add Drainage Holes

Using a drill, create drainage holes in the bottom of the planter box. These holes will ensure that excess water can escape, preventing overwatering and root rot. Make sure to space the holes evenly to allow for proper drainage.

6. Fill with Soil and Plants

Fill the planter box with potting soil, leaving about an inch of space at the top. This will allow room for watering without overflowing. Choose plants that are suitable for the amount of sunlight and the size of the planter box. Consider the height, spread, and growth requirements of the plants to ensure they have enough space to grow.

7. Care and Maintenance

Maintaining your wooden planter box is essential for its longevity. Regularly water your plants and check the moisture level of the soil. Avoid overwatering, as this can lead to root rot. You may also want to apply a sealant or exterior wood stain to protect the wood from weathering and extend its lifespan.


Creating a wooden planter box is a rewarding project that adds both beauty and functionality to your outdoor space. By following these steps, you can build a sturdy and attractive planter box that will provide a home for your favorite plants. Remember to choose the right materials, measure and cut the wood carefully, assemble the box securely, and provide proper drainage and maintenance. With your new wooden planter box, you can enjoy the joy of gardening and enhance the aesthetics of your garden or patio.

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