This is a self-draining planter. You can pour too much water into the top, and the soil will saturate with the right amount of water, and any excess water will drip through the holes at the bottom and collect into the cap.

What you need to print and attached files:
Print both the Planter-Assembly and Planter-Cap.STL files.

The attached .f3d file is the source Fusion 360 File, just in case you want to see how I designed it, or remix/modify it.

ALSO
Make sure to scale the cap down to 99 or. 98% scale as i designed it exactly, and it might not fit at 100%