I have a dracaena that was seriously rootbound in a 10-12 inch container. (That's the approximate size; I can't remember it exactly now). In March of this year, I untangled its roots and repotted it into a container that's 17 in high and 18 in in diameter. It seemed too big so I only planted it about 1/2 - 3/4 of the way up; there isn't a huge amount of soil on the bottom. It had transplant shock and lost some lower leaves on the bottom of its different "trunks," but it has bounced back after a few weeks and and looks good now!
However I now realize the risk of root rot in repotting it in an oversized container. Also, a secondary worry is that it might now grow/expand to its potential because so much energy is going toward its roots. Should I be proactive and repot it? Even if it's doing fine for now? Or is it okay because it's sitting lower in the pot? I really don't want root rot.
Thanks!