Propagating roses from cuttings is best done in the spring, when the plants are vigorous and the weather is cooler. Select a young, tender shoot . Old, woody stems will not grow well. Look for one that does not yet have a bud on it. If there is a bud, snip it off carefully. With a sharp knife, cut the shoot four to six inches long. Plant the cutting one to two inches deep in your flowerbed in an area clean of weeds and other plants. As to it's location, make sure to plan ahead. Ideally, it should be placed where you want it to permanently reside, and avoid the possibility of transplant shock from moving it at a later date. Water it well, and cover with a glass or plastic jar or container. The jar acts as a mini-greenhouse, encouraging better growth by keeping the temperature higher, especially at night, and retaining moisture and humidity.
The success rate of cuttings can be low for a number of reasons, especially for new and inexperienced growers. We recommend you start three or four cuttings. If they all develop, you can replant the extras, or give them to a greatful friend.
Check on your new rose bush every several days to make sure there is enough moisture in the soil. Water if the soil appears dry. Remember, the new roots will not be deep. Use of a little liquid fertilizer will help, but is not a requirement. Remove the jar from the plant during the daytime, if the temperature approaches 75 degrees or higher.
Do not worry if the shoot appears dormant for a while. All of the activity is really happening underground. It is focusing upon developing a root system, and does not have the energy or root support to develop new growth. After a couple of weeks, the shoot will begin to grow.
Once the new rose bush has begun to grow, you can remove the jar you placed over it.
WORD OF WARNING: it is ilegal too clone/cutting a hybrid patient rose. yup it is true some roses are protected via copyright/patient.
another note, some types of rose are harder too clone than others Floribundas are one type i know are hard too take cuttings.