Hi all..I have a very vigorous vine with blue/purple flowers that I was told was some kind of morning glory. The flowers stay open most of the day. It's in full bloom right now. I started it from a cutting and now it's huge in this one season of growing. I need to know how to save it for next year? Should I cut it down and put straw over the roots or just leave it alone? I have had alot of compliments on how lovely it is and want to save it if possible. I wish I knew what the name of it was. Any ideas?

Thank you for the replies,

Deb