"The grass is always greener over the septic tank"
We live in the country and like many folks in the area we have a septic system. The tank was replaced several years ago and we put in a rock surround to mark the perimeter and back-filled the area with wood chips and a couple of pieces of yard art.
A small succulent volunteered along the edge and we've let it spread over the years. It now fills almost the entire area, about 80 square feet. Every August the patch bursts into bloom and becomes carpet of little white flowers. It's a honey bee diner for weeks and you can see hundreds of bees working the area at any one time. It's a pretty cool sight.