I think it is called a Euphorbia Lactea, but I'm not too sure as it's a while ago since I got it and when I google the name it looks different from what I have so, it could be anything.

We do get snow here, and it rains from November pretty heavy, I live near a river and that sometimes bursts its banks.

when I go to see my mum next I'll take a photo of it and send it to you so you can have a look, she's away at the minute for a week, otherwise I'd ask her to send me a picture :D