You might try wrapping cuttings.
http://pushingtheroseenvelope.... Some of the first I tried were Banksiae lutescens and Fortuniana and they ALL rooted. I went from ZERO, total, complete failure to nearly 100% success using this method. I didn't create it, but was introduced to it. It will require tweaking to fit your climate and conditions, but it can help you propagate things you never thought you could. I would suggest starting at the beginning (linked above) and follow it through to the most recent entry so you have the full information.
If you hold them too warm, they rot. Too cold, they rot. Too wet, they rot. Like Goldilocks and the Three Bears, it has to be "just right", meaning within the tolerance zone. Once you find where you can hold them under the right temps and when the optimum condition of your roses is, you will love how easy and quick this method is. Everything you need is in the posts. Feel free to take it and run with it, experiment!
