I know alot won't believe me but here it goes.
The pot that my bonsai is in had a natural hole in it already that I found 1 year after I moved into my new home back in 1995. Back in 96 I was curious about bonsai but didn't have the time to care for it so I cut a small slip of my jade plant and put it in a small pot and then in side this rock.
It's 2016 and it's still living from 1996. The only time it gets a care is when I have time to do maintainance in the yard which is very seldom. A little water and maybe some old fish tank water. Again very little care and amazed at its survival