From Baja California and Sonora, Mexico, with a few plants in the United States in Organ Pipe Cactus National Monument, this plant is common in the wild but uncommonly available as seedlings in cultivation. It has 5-6 flutes that are sparsely lined with spines until the mature stems develop at the time of first flowering. The mature tips are covered with numerous grayish-white spines, earning this plant the common names of senita or Old Man Cactus. The flowers are small and pink-purple. Our plants have withstood 18F without damage. These plants are seedlings in 4-inch pots.