DIY Self-Watering Planter

Learn exactly how to build a DIY self-watering planter box. This sub-irrigation modern raised planter is perfect for any yard!

How to Build

Step 1: Prep

Make your cuts based on the plans and drill pocket holes to make assembling a breeze.

Step 2: Build the Box

Using 2x2s and 2x6s create the planter box by assembling with exterior wood screws.

Step 3: Build the Base

Build the base to the planter box with 4x4s and 2x4s connected with pocket hole screws.

Step 4: Attach the Planter Base

Assemble the planter box and base together using 2-1/2 inch exterior screws and wood glue.

Step 5: Self-Watering

Fit the pond liner into the planter box after the sealant has dried.

Step 6: Add the Drain Pipe

Cut perforated drain pipe to fill the base of the planter box, then cover the ends with landscape fabric and tape.

Step 7: Add the Inlet Pipe

Place a PVC pipe into the perforated pipe at a 22.5 degree angle. The fit needs to be tight.

Step 8: Add the Overflow Drain

To keep the water levels consistent add a 3/4 inch hose for overflow drainage to the side of the planter.

Step 9: Add the Potting Mix

Add your chosen mixture of soil. I use a 2:1 ratio of vermculite and peat moss underneath regular potting mix.