This cactus shows the phenomenon of gigantism, being larger and more robust than its closest relatives in the continental regions. It is a cactus that grows up to 4 m tall. It is among the largest species of columnar cactus, usually unbranched, forming a solitary column. Its stem is massive, dark green, globular flattened in juvenile specimens, then columnar.
The usual height of this species is 2 meters, but some specimens can reach 4m and between 60 and 100 cm in diameter. The ribs are slightly tubercular, vertical, straight or wavy in dying specimens, up to 3 cm in height. Mature plants have 25 to 35 ribs. The areoles are elongated 1 x 2 cm wide, with short tan wool that turns whitish / gray and eventually erodes with age. The flowers are reddish to fiery orange, the shape of the funnel is about 4 cm long and wide. The internal segment of the perianth is oblanceolate up to 2 cm long and 8 mm wide, dark red with yellowish margins. The outer segments of the perianth are brownish yellow. Stamens basally yellow that fade red to the tips, orange / red style up to 18 mm long with longitudinal ridges continuing on the stigma lobes, these are yellow up to 5 and 10 mm long. Fruits up to 3 cm long and 3 cm wide tend to dry out at maturity and open through a basal pore. Seeds bright brown, irregular and 1.5 mm wide.

Light-Temperature:

It needs full sun. Keep dry at 10°C in winter, but can tolerate occasional light frosts.
The lowest temperature (ºC) supported by this cactus is on average:: 5

Irrigation:

Use plenty of water during the growing period. But avoid moistening the bodies of these plants while they are under sunlight.

Multiplication:

Seeds

Soil:

Add coarse sand or pebbles to the universal substrate for good drainage.

References:

www.llifle.com