During late summer take a 12-18” length of stem, pencil width thickness or good strong shoot, and cut off the soft bendy top growth making sure to leave a couple of leaves at top of the stem. Ensure that it never dries out.
Make a slanting cut at top and horizontal cut at the bottom so you know which way up the cutting should be.
Then, either push into the ground in a sheltered position where it doesn’t get too much sun. Before pushing in, make sure the soil is easy to push the stem into.
Alternatively, put them in a pot of peat-free multipurpose compost. When doing this, bury the stem about half way down and once again place in a sheltered position out of direct light.
Leave the rose in the spot until good strong growth appears. Usually this takes several months, but it’s best not to dig up and move until the end of the year. It’s wise to be patient and not be in too much of a hurry to dig it up or take it out of the pot to replant.