Hey There, Yes I do grow these. There is a couple of different ways you can get this effect. Th 1st is by the way you described, but that is not how I did it. 1st Off I like to pick Nursery Plants with good root potential, other words a good portion of the roots are already exposed. What I do is when they are in a grow pot I spray a jet stream of water everytime I water, Kinda an erosion effect.