Wait until "winter" when your roses are less actively growing, then see if this looks like something you might be able to do. Start at the beginning here...
http://pushingtheroseenvelope....
Reading the successive posts for updates and tweaks which helped others fine tune it for their situations and climate. It may now work the first time you try it, but there is sufficient information there for you to understand why and how it works for you to be able to massage the method to fit your climate and conditions.
