Oh dear, I wonder what it is - arum lily is used as a common name for Calla, and calla is a common name for Zantedeschia - but there is an actual plant called Arum, and another called Calla. Some are hardy, some are not, so its important to establish precisely which plant you have there before being able to give any cultural instructions. Is it currently in leaf, or in flower?

Thanks for reply Bamboo. I have been on to the plants section of GOY and gleaned information relating to this plant from that site and, indeed, I now gather that it would be totally helpful to have had a label with the plant when I bought it (lesson learned on that score!!). It is in flower, with about six visible flowers, quite narrow leaves, and really healthy looking. I only got it for £2.00 so I think I will risk putting it in the boggy part of my pond (pond has a small leak which is a pain but can't do much about!!). What do you say? R19

What I say is, how about a photograph before you decide to plant it out, lol. No seriously, if you can, put one on. Otherwise, are the leaves spotted at all? What colour are the flowers and are they like sort of erect trumpets, or a flattened leaflike shape with a spadix (sticky up bit about an inch long) in front?

Have not mastered the photos yet as techno son is out at the moment and unable to (shout!!) help me through, but will attempt later. No spots whatsoever on leaves and I would say that the flowers are erect trumpets (good description) not flattened like some I have seen. Flowers quite "neat" and small and the spadix (yellow bit inside??) is quite far down inside the flower head. Does that help at all.

If the flowers are white, you might have Zantedeschia aethiopica 'Crowborough'. google it to see, and if it is that, its hardy and likes fairly moist soil. If the flowers are any other colour, then it'll probably be a non hardy Zantedeschia, but I have to say, most of those ones with the coloured flowers have silvery spots on the leaves.

Thanks Bamboo for all your help. Will do a google on the plant to see if it throws more light on what I have. You've been really helpful with a frustrating question. ps still not too sure how to reply so using add comment!!

That IS how you reply...