I accidentally put a cutting upside down in a root riot cube. It rooted in the cube but at the top of the cutting since it was upside down. A leaf popped up in the middle of the cutting, but pointed downward which is when I realized that it was stuck in the cube upside down. So instead of removing the cube from the wrong end since it already started rooting, I put another cube on top. So you end up with cubes at both ends, and then you plant it on its side.