For this step, you can use cactus-potting soil, soil mixed in sand, and succulent soil. Potting and repotting Aeonium. The best potting soil for your plants is one that is well-draining. Once the cutting is dry, you can place it in a pot with well draining soil. Place the seeds into well-drained soil such as sand and soil mix and cover them with a very thin layer of soil. Once you have the seed packets, you can begin sowing. Pots must have lots of drainage holes. They should be placed on a tray to allow you to water the plant from bottom up. A lot of water can cause the soil to become wet.