Yes, you can propagate Coffea arabica. One method is to take stem cuttings from an existing plant. Make sure the cutting has several leaves and at least one node. Cut the bottom of the stem at a 45-degree angle just below a node. Dip the cut end in rooting hormone and plant in moist potting mix. Cover the pot with plastic to create a humid environment and place in indirect light. Keep the soil moist but not soggy and wait for new growth to appear, which could take several weeks. Once new growth appears, remove the plastic and continue to water as needed. Your new plant can be transplanted into a larger pot or outdoors once it becomes established.