Unique DIY Hexagon Planter

Article Posted By: Home Depot Staff

Hexagon Planter

DIY Hexagon Planter

Hexagon planter boxes are an attractive and unique way to grow plants on your deck or in your backyard. Build a few of these planters in different sizes and heights for an impressive alternative to rectangular raised garden beds.

After completing your new hexagon planter, add a trellis to your hexagon planter to support climbing plants like honeysuckle, tomatoes or ivy. Just follow our step-by-step tutorial to build your own hexagon planter.




2 x 12 in. x 8 ft. Pressure Treated Boards

  • (12) 30 in. cuts with an inside angle of 30 degrees (exterior boards)
  • (12) 28½ in. cuts with an inside angle of 30 degrees (interior boards)

1 x 3 in. x 8 ft. Poplar Boards

  • (6) 30½ in. with an inside angle of 30 degrees (exterior trim)
  • (6) 28 in. cuts with an inside angle of 30 degrees (interior trim)
  • (6) 6 in. cuts

Our planter has a 60 in. diameter with 30 in. sides. The height of our planter is 24 in.

If you would like to make a different sized hexagon planter, the radius is equal to the length of the six planter sides. Example: a 48 in. diameter planter would have 24 in. sides. Adjust accordingly to fit your needs.

Step 1: Measure and Mark Your Cuts

Hexagon Planter

Mark the boards with a pencil.

Step 2: Make the Cuts

Hexagon Planter

Using your 12 in. sliding compound miter saw, cut all the pieces you marked.

You can also have all of your lumber cut in store. Ask a Home Depot associate to help you when you pick up your materials.

Step 3: Stain the Wood

Hexagon Planter

Stain the wood the color of your choice. We used Minwax English Chestnut Stain.

Step 4: Assemble the Hexagon Planter

Hexagon Planter

Glue the exterior bottom pieces together to create the hexagon. After the glue has dried, drill the 3 in. exterior wood screws to reinforce each side.

Repeat this step to create the exterior top hexagon.

Tip: Pre-drill the holes to ensure your wood does not crack. 

Step 5: Build the Inside Planter

Hexagon Planter

Now, assemble the interior bottom of the hexagon. Measure and mark 12 in. from the edge of an interior 28½ in. board. Then, glue a second interior board on the mark you just made to the first board. Repeat this five more times until you have completed the interior of the hexagon planter.

After the glue has dried, screw the 3 in. exterior screws into the interior and exterior boards to reinforce the structure. Then, place the interior boards inside the hexagon frame and attach using the 3 in. exterior screws.

Repeat this step to assemble the interior top of the hexagon. Do not attach the interior top structure until after completing the next step.

Step 6: Attach the Outer Panels

Hexagon Planter

Stack the second hexagon on top of the first one. This will make a 60 x 24 in. planter. If you prefer a shorter planter, simply make one hexagon instead.

Join the top and bottom planters together with 6 in. poplar boards or scrap lumber. Drill 2 in. exterior wood screws into each panel. You can also use metal straps for this step.

Now, stack the top interior boards on top of the bottom interior boards, and attach them to the exterior hexagon frame.

Step 7: Attach the Trim

Hexagon Planter

Glue the 30 in. popular pieces to the outside trim of the planter so there is an overhang of ½ in. on the inside and outside edge of the planter. Use the 28 in. pieces as trim for the inner panels.

Hexagon Planter

Then, hammer in the finishing nails to reinforce the trim. This gives a nice finished look to the trim.

Step 9: Pour the Soil

Hexagon Planter

Position your planter before pouring your soil.

Make sure your planter is set on a level surface. For better drainage, add 1 to 2 in. of gravel to the bottom of your planter prior to adding soil.

Tip: If you place your planter on your patio, you can put a piece of ¾ in. plywood between the two outside boards. If you do this, you will not need to make the inner bottom panels. Stain and waterproof the plywood, then drill drainage holes into the plywood so that water can drain from the soil. 

Now your planter is ready for herbs or flowers!

Completed Hexagon Planter

Hexagon Planter

Hexagon Planter

For more gardening inspiration, check out our Garden Club board on Pinterest. Watch our Gardening Tips and Projects on YouTube for helpful planting tips for your hexagon garden. Read more garden ideas on our blog. For all of your gardening needs, visit our Garden Center.