This is an example of a medium planter that I made. I use a 3 to 1 ratio of potting soil and sand. I then use gravel or pebbles to cover the soil. The lower plant is a living stone and currently it is dividing. The old portion should dry up and the new portion will take over. This is such a unique plant, at one stage it has a flower that looks like a daisy. They are quite temperamental. They will soak up all the water in the container, like a sponge, and crack open. I have not had the best luck with this plant and of course I have lots of request for them.