Peggy Martin practically roots herself if the canes touch the ground.
The easiest method to prop is right after the cane blooms. Cut a portion with 3-4 nodes, remove all but two leaves, dip in hormone, and push it into the soil (1/3 of the cane) at the base of the rose. I have a very high success rate in zone 7b with this method. Good Luck.
Rose Geek