I am using this planter as a low centerpiece on my dining room table.  I planted moss in it and I lined the interior with plastic wrap before planting just as a precaution against leaking.  No water issues at all.  I also added felt to the bottom to prevent scratches on the table. The gray concrete is exactly what I was looking for to accent the wood table.  Love the sturdy, heavy look and feel.  Very high quality.