My 'Onex' purchased in 2012 from Petrovic, turns out to be 'Nuits de Young', a dark Moss. I don't know how widespread this error is. Does anyone have an 'Onex' that's distinct from NdY, or have they seen a plant that is?
This error seems to be widespread. My 'Onex' -purchased at Rosenbaumschule Fechner' - was also 'Nuits de Young'. Maybe the origin was identical to that of your rose. Now I have got another 'Onex' and it is a Gallica but with a great similarity to 'Cora'.
Thanks for the reply. As far as the garden is concerned, I'm overwhelmed, but perhaps come fall may be able to think about roses and not just garden cleanup. I appreciate this information.