hi jesseveve :)
hoping that your corm is zantadeschia, I bought one from wilko's this year, half price.
Potted it up in early June, sprouted almost straight away and now has plenty of foliage. If it was my corm I'd pot it up now on the basis of being curious!
I think they require winter protection, have googled 'arum lily' and this page seems to give good info:
bulbexpress.com.au/age/growing_guide/arum_lily/arum_lily.html
sorry don't know how to post it as a link, sure there are other good sources too!
:)