Cut a stem 6 to 8 inches long at a 45-degree angle with a sharp knife or pruning shears. Select a stem that has withered flowers or which is forming hips. Their root tips are easier to root, according to Texas A&M University Extension. Take more than one cutting, for they all may not take root.
Remove any roses and leaves from the stem, leaving a set a healthy leaves.
Dip the stem into a rooting hormone to promote healthy roots. Follow the manufacturer’s label for proper usage.
Place two thirds of the stem into a small plastic flower pot with potting soil and sand at the bottom for adequate drainage.
Mist the cutting and the potting soil with water. Place a plastic bag over the entire flower pot and secure with yarn or twine.
Set the rose cutting outside in an area with indirect sunlight. Monitor frequently and water just to enough to keep the soil moist. The stems should be rooted by April or May, but wait until fall to plant them.