Commonly known as the Madagascar ocotillo, is a tall, spiny succulent native to the dry southern regions of Madagascar. It is known for its distinctive upright, pillar-like form, with thick green stems that store water and are covered in sharp gray spines and small, oval green leaves. In the wild, it can reach heights of 33 to 50 feet, although plants grown in containers or gardens typically remain much smaller. This species is deciduous, shedding its leaves during the dry winter season to conserve water and producing new foliage when rain or watering resumes. Mature plants may also develop small clusters of greenish-yellow to white flowers near the tips of their stems.