How to Build a Planter Box for a Tree

Building a planter box for a tree adds an extra element of beauty to your landscaping. It's also an efficient way to provide space for planting trees in areas where the soil may be depleted or where there's no soil at all. In this article, we'll provide you with the steps you need to build your own planter box for a tree.

Step 1: Choose the Right Materials

The type of material used for the planter box depends on the size of the tree that will be planted in it. However, for most trees, a wooden planter box is a good option. Cedar, redwood, or cypress are types of wood that are suited for outdoor use and will withstand weathering.

You'll also need screws, drill bits, handsaw or circular saw, measuring tape, and a pencil.

Step 2: Determine the Dimensions

The size of the planter box depends on the size of the tree that will be planted in it. Measure the diameter of the tree's root ball to get the exact size of the planter box. The planter box should be about 3 to 4 inches deeper than the root ball of the tree.

For example, if the diameter of the root ball is 24 inches, the planter box should be at least 27 inches wide and 27 inches deep.

Step 3: Cut the Wood

Using the saw, cut the boards according to the size you need. Start by cutting the sides, then the bottom, and finally, the ends. If you're using pressure-treated lumber, wait until the lumber has fully dried before cutting it.

Step 4: Assemble the Box

Lay the bottom board flat and attach the side boards using screws. Then, attach the end boards, making sure that everything is square. Finally, flip the box over so that the bottom is facing up, and attach the second layer of side boards.

Step 5: Add Drainage Holes

Drill several holes on the bottom of the planter box to ensure good drainage. This is important for preventing standing water from accumulating, which can lead to root rot.

Step 6: Paint or Stain the Box

If you choose to paint or stain the box, do it before planting the tree. It's also a good idea to seal the box to protect the wood from weathering.

Step 7: Plant the Tree

After you've finished building the planter box, you can plant the tree. Fill the box about halfway with soil that is appropriate for the tree you've chosen. Then, gently plant the tree and fill the remaining space with more soil.

Make sure you water the tree thoroughly after planting.

Conclusion

Building a planter box for a tree is a unique and beautiful addition to your landscaping. By following these steps, you'll be able to create a gorgeous planter box that will ensure the health and prosperity of your tree.