That's a really interesting method, Andi. I've had terrible luck with trying to propagate some of my roses, and everyone else has too, I think, because they're roses that aren't offered by any of the own-root nurseries. Audrey Hepburn is one of them. I bought mine grafted years and years ago from some God-awful place like Michigan Bulb. I've tried to grow it for several friends, but never with any luck. The softwood cuttings grow for a while and then eventually falter and die. Maybe the hardwood method would work on it. Or maybe it just refuses to grow on its own roots.