Peniocereus viperinus, commonly known as Cardoncillo, is an evergreen or semi-deciduous succulent native to the arid and semi-arid regions of Central and Southwest Mexico, where it thrives in rocky outcrops and desert scrub environments. This plant can reach a height and spread of 12-20 feet (4-6 meters), presenting a candelabra-like form with slender, elongated stems. The stems are typically gray-green and may take on a more deciduous habit during periods of drought. Cardoncillo is notable for its nocturnal blooming habit, producing large, showy pink and red flowers in the summer that open at night and are pollinated by bats and moths.

Cardoncillo is valued for its sculptural form and striking flowers, making it a unique addition to xeriscapes, rock gardens, and desert-themed landscapes. It is also used as an ornamental in pots for patios and balconies. This succulent requires minimal maintenance and is drought-tolerant once established. It prefers well-draining soil and can tolerate a range of light conditions from part shade to full sun. While it is generally free of serious pests and diseases, overwatering can lead to root rot. It is important to note that Peniocereus viperinus should be protected from frost to prevent damage to the stems.CC BY-SA 4.0