Pachypodium rutenbergianum (Madagascar Palm)

Pachypodium rutenbergianum, commonly known as Madagascar Palm, is a spiny succulent tree in the Apocynaceae family native to Madagascar. It develops a thick, upright trunk covered with paired spines and can reach 20 to 30 ft in the ground, with a narrower form in containers. Leaves are long, narrow, and arranged in clusters near the tips of branches, giving the plant a palm-like appearance. In warm conditions, it produces clusters of white, star-shaped flowers that are pleasantly fragrant with a sweet scent, typically on mature plants.

This species prefers full sun, excellent drainage, and a mineral-rich, fast-draining soil. Watering should be moderate during active growth, allowing the soil to dry between applications, with reduced watering during dormancy. Growth rate is moderate to fast in heat. Cold tolerance is limited, with damage likely below 40F; best suited to USDA Zones 10 to 11. Pachypodium rutenbergianum is well suited to container growing and requires protection from frost.