Aporocactus flagelliformis has always been one of the most popular cacti in cultivation. It was among the first cacti introduced to European culture, likely before the year 1690, as mentioned by William Watson (1898).
Scientific Name
Aporocactus flagelliformis (L.) Lem.
Common Name(s)
Rattail Cactus
Synonym(s)
Cactus flagelliformis, Cereaster flagelliformis, Cereus flagelliformis, Disocactus flagelliformis
Scientific Classification
Family: Cactaceae
Subfamily: Cactoideae
Tribe: Hylocereeae
Genus: Aporocactus
Etymology
The specific epithet "flagelliformis" (pronounced "fla-gel-ih-FOR-miss") means "whip-shaped" and refers to the long, slender stems of this species. The common name "Rattail Cactus" reflects this same characteristic.
Origin
Aporocactus flagelliformis is native to Mexico. It grows as a lithophyte or epiphyte in the dry forests of Hidalgo and Oaxaca.
Description
Aporocactus flagelliformis, also known as Disocactus flagelliformis, is an attractive cactus with slender, cylindrical stems that have 7 to 14 ribs lined with clusters of bristle-like spines. Initially, the stems are ascending, but as they lengthen, they become trailing or hanging. They start off green and gradually turn gray-green over time, reaching lengths of up to 6.6 feet (2 meters) and a diameter of 1 inch (2.5 cm). The tiny areoles are whitish, each bearing 8 to 20 reddish-brown to reddish-yellow spines measuring up to 0.4 inches (1 cm) long.
From mid to late spring, Aporocactus flagelliformis produces scentless flowers ranging from bright red to purplish-pink. These funnel-shaped flowers can reach a length of 3.2 inches (8 cm) and a diameter of 1.6 inches (4 cm). They bloom during the day and remain open for 3 to 5 days. The fruits are red, bristly, and spherical, growing up to 0.5 inches (1.2 cm) in diameter. Inside, the fruits contain yellowish pulp and tiny, brownish-red seeds.
How to Grow and Care for Aporocactus flagelliformis
Light: Aporocactus flagelliformis can tolerate partial shade, but it thrives in full sun. If you are growing it indoors, a sunny window is an excellent location. To promote balanced growth, rotate the pot a quarter turn every week or two. If possible, move the cactus outdoors from spring to fall.
Soil: This cactus grows best in well-draining soil. You can use commercial soil mix specifically formulated for cacti or make your own.
Hardiness: During the growing season, Aporocactus flagelliformis thrives in warm temperatures, while in winter, it prefers cooler conditions. It grows best in USDA Plant Hardiness Zones 10a to 11b, with average minimum winter temperatures ranging from 30°F to 50°F (-1.1°C to 10°C).
Watering: During the growing season, this cactus requires frequent watering. Water the soil abundantly until it is completely soaked, but allow it to dry out between waterings. In winter, keep the soil relatively dry.
Fertilizing: During the growing season, this cactus benefits from regular fertilizing. Use a balanced, water-soluble fertilizer diluted to 1/4 strength and add it to each watering. A 10-10-10 fertilizer is ideal. Alternatively, you can use dry fertilizers instead of a liquid solution. However, stop fertilizing during winter.
Repotting: Repot Aporocactus flagelliformis once a year while it is young and whenever it outgrows its pot as it matures.
Propagation: The easiest method to propagate this cactus is by stem cuttings, as seed propagation is a slow process. The best time to take cuttings and sow seeds is during spring and summer.
Learn more at How to Grow and Care for Disocactus.
Toxicity of Aporocactus flagelliformis
Aporocactus flagelliformis is considered non-toxic.
Hybrids
Links
- Back to genus Aporocactus
- Succupedia: Browse succulents by Scientific Name, Common Name, Genus, Family, USDA Hardiness Zone, Origin, or cacti by Genus
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