Thanks for the tag @GreggT. I will have to read back and make sure I answered the question. I am not up to date on this thread.
I have kept them in 4” veggie start pots and 2” strawberry start pots. Both seem to work well. Hehe I put a strawberry starburst into a strawberry pot; always makes me chuckle.
The trick is to hack roots too, and not just the tops. I hack the tops down to 1 node (aggressive hacking) after they reach the lights. {side note: This is a good way to estimate stretch monsters vs low growers during Bansai. Some need it everyweek, some only 1-2 times a winter.} Then 48 hours later I slide the root bound mass out of the little pot and cut it in half horizontally with the scissors. I will pack it with some fresh soil after the root chop.
Things to look for: hermies. Root binding is a great way to identify and cull hermies early on. Sexing, seeding after sexing, and reveging is great on Bansai. They switch back to veg quickly being Bansai with less plant mass. Much quicker. I like to pollinate at sexing, cull the males, reveg, harvest seed, then plant the reveged top. That’s it in a nut shell. Here is my rarely read thread in detail about what I do. More or less.
Sorry about all the curse words, was made before I knew the rules. I am a potty mouth.
Anyone do seed runs in the winter?