Mornin Highpo, and friends. With those roots....growing in soft pots or another type of 'air pruning" pot, like the 'Rootbulders' i use , or those Smart Pots...they all cause the root branches to get air pruned at the outsides , causing a completely different finer root mass. When using hard pots , the root ends hit the side and start coiling around , looking for moisture and food. With the other , soft pot, the root end dies right there and other branches grow 'out' from it , something like what happens after we 'top' our plants. So , the main thing to remember with them is to make sure they are very well watered, especially around their perimeter.
I just love the pots i use ...when i do the transplanting later, i'l take some pics of the 26 gal's of soil sticking together as one big round bowling ball. It's pretty cool how the fine root mass is throughout the whole mass of soil.
Anyhow , ramblin a bit....cheers and have a great Sat .