You can try the rose rustler's technique. You can buy several large plastic planters and fill them with sand. Then take rose cuttings about 7 inches long, pinch out the soft top growth and pinch off all but the top 1 or 2 leaflets. Then sink about 6 inches of the stem into the sand. The roots develop at the buried leaf nodes, and more roots mean a better plant. Water the pot really good and cover loosely with saran wrap or use the tops of clear plastic coke bottles. Give the pots a bit of shade at first, to help them get used to things. The sand is really important to keep the babies from rotting. Sand should stay damp. Water regularly. New growth is a sign of rooting. When they get too tall for the saran wrap, take it off. Leave them in the baby pot until autumn or next spring. Then they can go into the real world.