Pachypodium

Pachypodium is a genus of succulent shrubs and small trees in the Apocynaceae family. Native to Africa, Madagascar, and the Arabian Peninsula, they are commonly called Madagascar palm or bottle plant, though they are not true palm trees. The genus contains multiple dozen species, with Pachypodium lamerei being the best known in cultivation. They are valued for their architectural, bottle-like trunks and drought tolerance.

Most Pachypodium species are adapted to arid environments and possess a thick, spiny trunk used for water storage. A crown of evergreen leaves sits at the apex, with spines often lining the trunk. Flowers, produced in warm weather, are tubular and typically yellow to white, sometimes with colored centers and attractive inflorescences.

Species range from compact shrubs to tall, columnar trees and occupy rocky slopes, savannas, and forest margins in tropical to subtropical regions. Notable species include P. lamerei, P. namaquanum and P. rosulatum. Some forms are deciduous in the dry season.

Cultivation and care: In cultivation, Pachypodium require bright light and fast-draining soil, such as a cactus or succulent mix. Water sparingly, allowing the soil to dry between waterings, and reduce irrigation in winter. They dislike frost, so in temperate regions they are grown as indoor container plants or sheltered specimens. The milky sap is caustic and toxic if ingested; wear gloves when handling. Propagation is achieved by seed or cuttings; seeds germinate slowly.