I have new growth on rose stems that were from cut flowers. I would love to propagate bushes but I'm unsure how. I have never dealt with rose cuttings, plus it's fall in PA.
Since it is the Fall season, you may want to move the operation of rooting the roses inside. Here is an article for you to check out on starting/rooting roses from cuttings too: https://www.gardeningknowhow.com/ornamental/flowers/roses/roses-from-cuttings.htm