This is Disneyland. It performed really well on its own roots for the first two years, but never did grow as tall as it should have. Then it went through a gradual demise, and has since been replaced with a grafted version. I used to think own-root roses were preferable to grafted, but Zuzu set me straight on that score. Sometimes they're better, but sometimes they're not. Like so many other aspects of rose horticulture, it all depends.