I put the sprouted end of a sweet potato in my viv earlier this year. It was doing very well for a while and then died very quick. It was pretty while it lasted.

I suspect it may have been a change in the water level and I "drowned" it. I've not gotten around to trying another.

I've got some carrot tops in there now. They add quite a different look compared to the other usual viv/terrarium plants.