A tall, heavily branched tree-like cactus that can reach up to 7 meters (23 feet) in height with a short, thick central trunk.
The upright branches are grayish-green to blue-green, roughly 7 cm in diameter, and feature 7 to 9 deeply grooved ribs.
Each felted gray areole contains roughly 17 straight, needle-like spines that range from brown to gray, with the longest central spine measuring up to 2 cm.
Produces large, funnel-shaped nocturnal flowers (around 7 cm long) near the tips of the branches. The petals are white with reddish-pink outer tints and open completely for just one night.
