Propagating a houseplant from a stem cutting is a popular and effective way to expand your plant collection or share your plants with friends and family. Here's a step-by-step guide on how to propagate a houseplant from a stem cutting:

1. Choose your cutting: Select a healthy stem from the parent plant that is at least 4-6 inches long and has several leaves. Make sure to use a clean, sharp pair of scissors or a knife to avoid damaging the stem or introducing bacteria or fungi.

2. Prepare the cutting: Use a clean, sharp pair of scissors or a knife to remove any leaves or branches from the bottom one-third to one-half of the stem. This will ensure that the cutting is getting the maximum amount of nutrients to promote rooting.

3. Apply rooting hormone: If desired, dip the bottom of the cutting in rooting hormone to promote root growth. This is not always necessary, but can help to speed up the process of rooting.

4. Plant the cutting: Place the cutting in a rooting medium such as vermiculite, perlite, or water. Make sure that at least one node is covered by the rooting medium. Gently press the medium around the stem to hold it in place.

5. Provide the right environment: Depending on the plant, you may need to provide additional humidity or warmth to promote rooting. Cover the cutting with a clear plastic bag or wrap to create a humid environment, or place the cutting in a warm, sunny location if the plant prefers warmth.

6. Monitor the cutting: Check the cutting regularly to make sure that the rooting medium remains moist and that the plant is getting the right amount of light and humidity. If the medium becomes dry, mist it with water or add more water to the container.

7. Wait for roots to develop: It can take several weeks to several months for the cutting to develop roots. Be patient and continue to monitor the cutting regularly.

8. Transplant the new plant: Once roots have developed, you can transplant the new plant into a pot with fresh soil. Be gentle when handling the new plant, as the roots may still be delicate.

Propagating a houseplant from a stem cutting can be a fun and rewarding way to expand your plant collection. With the right technique and environment, you can enjoy watching your new plants grow and thrive.