Adenium obesum, also known as the desert rose, is a small succulent plant that is native to Africa and the Arabian Peninsula. It is a popular choice for bonsai enthusiasts due to its unique caudex, a swollen base that stores water and nutrients. Desert roses are known for their beautiful blooms, which come in a variety of colors, including red, pink, white, and yellow. They are relatively easy to grow and can tolerate a wide range of conditions.