I bring my agaves in, it's so wet here that it's very hard to get them through our winters, BUT as a test I tried and was able to get several to survive outside that are rated as hardy in zone 8!
I had to cover a large mounded area with plastic, but it worked!
Black stem colocasia can mean... Well... A lot of different things...
If we can ID it or at least determine if it's one I don't have, then I'd love to trade for some, same with agave, if you have ones that I don't then a trade would be good.
You can check my list, it's incomplete, but will give you an idea.
I need to go but please tree me, or I'll tree you!
Thank you very much for the response!