Adeniums are grown not only for their beautiful flowers, but also for their unusual caudex formation. Manipulating the plants when young might produce different caudex results.
Being new to raising adenium, and after reading a lot there seems to be a wide variety of soil mixes. So, using what is locally available I want to use a mix of: 40% sand, 40% aquarium gravel, and 20% potting soil. Is this a good mix?