I bought mine at Calloways.If I remember correctly, it isn't a "real" cultivar (or whatever the term is) At least that is what a clem expert told me. I love your Rooguchi.,Tom. I am not sure if you know but an integrifolia is a non climbing vine. I hope my Rooguchi. looks as good as yours in a few years. If my Bluebell lives long enough to have seedheads, I can send them to y'all.