By Sagabrat
United Kingdom 
Hi,
I have a Arum Lily Zantedeschia Black Star in a decentsizepot, can I leave it outside in the pot for the winter or should I take it inside, I have been told that it is hardy but I am not sure about that. It is still green but a bit droopy.
11 Nov, 2010
Whoever told you that it's hardy was being a bit optimistic, as the only reliably hardy Zantedeschia in the UK is Z. aethiopica 'Crowborough' which has white flowers.
Yes, you should take it into a frost-free place and let it die back and dry out, then repot it in the spring in fresh compost, or just start watering it again.
11 Nov, 2010