Pachypodium brevicaule

Scientific Name

Pachypodium brevicaule Baker

Synonym(s)

Pachypodium brevicaule subsp. brevicaule

Scientific Classification

Family: Apocynaceae
Subfamily: Apocynoideae
Tribe: Malouetieae
Genus: Pachypodium

Description

Pachypodium brevicaule is an odd-looking succulent with a gray bulbous multi-branched stem with short spines. The tiny branch nubs sprout thin green leaves that fall off during the plant's winter dormancy and re-sprout in spring. The stem is up to 4 inches (10 cm) tall and 12 inches (30 cm) in diameter. Branches usually evidence themselves only as lobes on the overall blob shape. Leaves form loosely compact rosettes. They are up to 1.6 inches (4 cm) long and 0.8 inches (2 cm) wide. Flowers are tubular, bright yellow, up to 1.2 inches (3 cm) in diameter, and appear in the summer.

P. brevicaule is the smallest and probably the strangest species in the genus. The specific epithet "brevicaule" derives from the Latin "brevi," meaning "short" and "caulis," meaning "stem," giving the meaning "short-stemmed," and it is!

Hardiness

USDA hardiness zones 10a to 11b: from 30 °F (−1.1 °C) to 50 °F (+10 °C).

How to Grow and Care

The attractive flowers of Pachypodiums and the intriguing shapes of their swollen stems make them desirable for any garden. However, they are not suitable for cold or damp gardens and are very sensitive to frost. If planted in a warm garden that experiences occasional frost, they should be given a warm, sheltered position.

They make good accent plants in a rock garden, especially when grouped with other caudiciform succulent plants. All need full sun, lots of water (except during the dormant phase), and must have good drainage.

Almost all species are surprisingly adaptable to cultivation, changing their growing season when grown in the northern hemisphere.

These plants like ample light and grow best in full sun. Partial shade is tolerated but may discourage flowering. When grown in a glasshouse, ventilation is important. Ample water is required during the growing season, depending on the species and the size of the specimen. Allow the soil to dry out before adding more water.

Learn more at How to Grow and Care for Pachypodium.

Origin

This species is native to the south-central regions of Madagascar.