Let's look at "K" hostas today. I have several and I bet you have even more.
The first is the name of my elder daughter, 'Karin', and shows why you should check hostas out before buying them by name. I don't really like this one and with the wet spring we had, it developed some drawstring. 'Karin' was new spring 2006 and has had a few divisions taken from it. It is fertile, but so far any seedlings have been unremarkable. This photo was taken June 28.
'Katsuragawa Beni' taken June 20. This was new to me spring 2006 and I really liked it at the beginning. Nice red legs. But as it grew, I became less enamored of it and intended to get rid of it when I lifted and divided it last autumn. However, I couldn't bring myself to give away or sell the last division; so it's in a pot for now.