The SECRET to propagating roses is said to be the "potato"! TIP: Before planting rose cuttings, push the bottom end into a small potato, which keeps the cuttings moist as they develop roots. It sounds crazy, but apparently it works really well.
a pinner said.Growing rose cuttings with potatoes. The other day, I read you can propagate roses by sticking rose cuttings in potatoes, and then sticking them in the ground. I decided to try it out using my rose bush, which is blooming like crazy