Answer: You could try that, but to be honest in my experience it probably won't work out too well. Roses can sometimes be started from tip cuttings, but for best results you would take the fresh cutting in the summer and it would be about six inches long and preferably without a bloom. You would remove most of the leaves, dip the cut end in a rooting hormone, then stick it upright into a slightly damp soil-less potting mix. Enclose the container and cutting in a clear plastic bag and set it in a bright location but out of direct sun. Check occasionally to make sure the soil is damp and to allow for some air exchange. In time, with luck, you will have rooting. Some roses do not root well so they would typically be grafted or budded for better propagation instead. And, many of the florist roses sold today do not survive in cold winter climates such as yours. Having said all that, it is always fun to give it a try and see what happens. But please do not be too disappointed if it doesn't work.
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