Spiral Cactus

Scientific name

Cereus forbesii f. spiralis
(often sold as “Spiral Cactus”)

General description

The spiral cactus is a rare and spectacular form of the genus Cereus , recognizable by its stem that naturally spirals upwards. Its geometric and sculptural silhouette makes it a highly sought-after collector's plant. Its color varies from bluish-green to dark green, with widely spaced areoles bearing small, decorative spines.

Origin

Originating in South America, this spiral shape is the result of a natural mutation selected in culture.

Interview

• Light : full sun to very bright light; essential to maintain growth and spiral shape.

• Watering : water rarely; allow the substrate to dry completely between waterings.

• Humidity : low; prefers a dry environment.

• Temperature : between 18 and 32 °C; can tolerate cooler temperatures if kept dry.

• Substrate : very well-draining mix for cacti (mineral aggregate, sand, perlite).

Specific advice

• Sensitive to overwatering — risk of trunk rot.

• Deep pot recommended to support vertical growth.

• Can become very high over time.

• Toxic if ingested and can cause skin irritation due to the spines.