The Best Long-Stem Rose Breeds How to Prune a Rose Tree Long-stemmed red roses are hybrid tea roses that can grow anywhere from 2 to 6 feet tall, topped by one flower on a long stem. They are a relatively new type of rose, the first one being produced in the late 19th century. Some of the most common varieties are Ingrid Bergman, Opening Night and Firefighter. They grow in U.S. Department of Agriculture plant hardiness zones 5 to 11, depending on which variety you have.