Cinnabar, Queen Elizabeth, Flordora, etc. R. roxburghii

General Discussion
1

I remember a few years ago about a fascinating article about these roses, but I can’t find it. Also, how much roxburghii does all these roses have? I remember someone did a test (something to do with acidity). I’m most intrested with Queen Elizabeth because a friend show me his seedling that has flacky bark.

2

You may be thinking of the HD Wulff article “Notes on the Breeding Behavior of Rosa Roxburghii and Rosa Multibracteata” in the 1954 ARS Annual, 73-77.

3

Thanks! Bought the book on amazon.com…