@InTheShed I thought these experiments might be of interest. I like how Gee man has sliced up the root ball in to cross sections so that we can get a better picture of the root formation from the swick.
Here is the other one. It was a pad of roots on the bottom, woven walls, a pad of roots on top, and uneaten soil in the center.
Bottom quarter, next quarter, 3rd quarter, and top.
Here is the top pad of roots. The bottom was almost the same in size but more smooth like water roots.