Need to start a plant cutting to give to a friend, or to replant for yourself? This method is simple and effective. By starting the cutting in a sealed plastic baggie, you ensure the leaves can take root with minimal intervention. The bag acts almost as a greenhouse, keeping in moisture until it's time to transfer the cutting to a pot or other container.
Mix equal parts of light, sandy soil and vermiculite. The light soil is desirable because it doesn't foster disease, as darker potting soil tends to do in undeveloped cuttings.
Pour 2 to 3 inches of the soil mixture into a zip-top plastic sandwich bag. Water the soil until it is very wet, then tip the bag to pour off any standing water.
Use the shears to cut off a small section of the plant at an angle. Moisten the trimmed edge of the cutting and remove any leaves on the lower third of the cutting.
Plant the cut tip of the cutting into the soil. Seal the baggie almost entirely and inflate the bag with air; then finish sealing it. The air will create a greenhouse-like atmosphere in the bag, and will also keep the bag from touching the plant. Set the baggie in a shallow bowl to keep it upright.
Let the plant take root. This process will take anywhere from 1 to 3 weeks. While the cutting is growing, place the bag in partial sunlight and check the soil every few days to make sure it is still moist.