The Mexican Fencepost is a fast-growing, handsome, dark green, columnar cactus. It can reach up to 10 feet high. Branching from the base can spread to approximately 6 feet wide, although each column is about 6 inches in diameter. The 4 to 6 ribs of each column feature small white spines. In the spring, pink flowers appear. The Mexican Fencepost is ideal as a bold, dramatic accent in the ground or in a container. Native to southern Mexico, its canopy coverage is approximately 28 square feet.

Source: Lush and Efficient