Yes - it can easily be grown in a container, and it does make a suitable bonsai. As bonsai, the leaves can be reduced in size over time, for a more proportionate tree. Al

"I hope we can still get that cool rainbow look but I'm really just happy I'm getting any growth at all right now." Not in Virginia Beach but it's impressive, surprising even, that it managed to return from the roots. Where did your gift giver get it - or did you ask? I think they are pretty rare in commerce. "We have a lot of crepe mertles here that people cut back and the tree regrows its branches back, would a eucalyptus do the same?" It would but it's a bad idea, especially for crape myrtle. Google "crape murder" - I believe there used to be a website.

Drew, I can send you some seed of a few of the varieties you listed if you are interested - they grow locally or as street trees in my area. Im pleased that you are interested in our beautiful aussie flora. Cheers

No, it will not be ok. E. deglupta is frost intolerant at any age/size. There is some evidence that it may tolerate very light frost for short periods but anything close to 32 degrees is probably going to be the end of it.