Hi Karen,

These are both fairly robust species. You should be fine doing the same thing you've done with your konjacs.

Sauromatum venosum will very likely do fine in a pot as well - it's pretty weedy and not as prone to rot.

Smaller tubers can sometimes dry out under conditions like yours, and a lot of people will store them in more a more humid atmosphere ( in some sort of moderately damp, but very loose medium ), but since you've said even your small konjacs aren't drying out, I'm guessing you'll be fine.

-Albert

Here is a link that might be useful: Albert's Greenhouse

Albert,
I toured your greenhouse via the net!

Thanks for your thoughts. I can breath easy!
Karen