Fill a 16- by 9-inch, 6-inch-deep plastic box halfway with moist, unmilled sphagnum moss. This is different than peat moss and can be bought at any garden supply store. Fill a plastic cup with an inch of rooting medium.
Take three or four, 4-inch-long softwood cuttings. Softwood cuttings are the current year's new growth that has just started to harden a little but is still pliable. Measure from tip of the stem. A good time to take cuttings is near the end of May in most climates.
Remove all leaves from the lower half of the stem. Cut the base at an angle and dip in the rooting medium. Insert cuttings in the sphagnum moss growing medium in plastic box.
Cover the entire plastic box with a large plastic bag and close top with a rubber band. This helps keep moisture in to create a greenhouse effect. Place in an indoor area of high shade. Do not expose to direct sunlight. The cuttings usually root by late fall.
Remove the plastic and let cuttings grow in box until early May. Transfer to small individual pots and let them grow for a whole season before transplanting to a permanent site in the garden.