5. Select a stem to cut. Most succulents are not difficult to grow, but you can still increase your chances of a healthy plant with the right cutting. Ideally, select a stem that is actively growing, near the top or outer edge of the plant, and 4–6 inches (10–15 centimeters) long.. Strip leaves from the lower part of the stem. If you are using a stem cutting, remove the lowest cluster of leaves. Strip them with the same, sterilized knife, leaving the lowest 2–4 inches (5–10 cm) of the stem bare.