Answer: Hybrid roses are almost always grafted onto a really vigorous rootstock, to help them survive the challenges of winter weather. Even if a cutting from a hybrid rose were to root, it's not likely that the resulting rose bush will be hardy enough to grow for very long. You can try to take a cutting (4-6 inches of non-flowering vigorous growth; dip the cut end in rooting hormone and set it in a container of moistened potting soil). I would caution you not to invest too much time, or hope, in this project -- the results may be disappointing.
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