@rcanada, tell me again how to raise a plant up when re-potting. I think I will trim the tap-root on 50% of my plants and raise half of those that are root-trimmed and half of those that are not root-trimmed. That will offer a good "experiment". I just need to know how you raise those plants up.
I did un-pot a single plant yesterday just to see if indeed, there was a tap-root. The plant was perhaps 6" tall. There was a tap-root, and though I just put the plant back into the same pot/soil, I did trim the tap root.