You can try taking a softwood cutting from a dogwood tree in mid summer. Cut a branch the thickness of a pencil about 8 inches long. Remove all leaves and poke this into a rooting medium of half potting soil mixed with half perlite. Use a clay pot about 6 inches wide and keep the soil moist but not wet. Take six to seven cuttings per pot as most will not root. Cover with plastic but don't let the plastic touch the cuttings or hold too much moisture. Check daily to vent the plastic if too much moisture builds up. Bottom heat and rooting hormone powder will help the rooting process. After a year you may have one cutting with enough roots to transplant to a larger pot. After 2 years you may be able to transfer the cutting to the soil. Keep the cutting from freezing or drying out for these two years. In the end, it may be a whole let easier to just buy a new young dogwood. If you enjoy a challenge, then grow for it! Keep growing, Marianne Binetti