According to Plant Delights nursery description. Their strain of this banana came from someone living in zone 6. And that they had this banana growing for years. I want one when go this weekend for their open house. We'll find out together!

Is there a nursery online in europe where I can to buy it?

I bought mine from Brian's Botanicals located here in the States, but if you contact him, he may be able to suggest a nursery closer to you, since he gets a lot of plants from other countries.

Hardy Tropicals UK has them also.

http://www.hardytropicals.co.uk/forum/viewtopic.php?f=111&t=14219&start=45