Cephalocereus senilis , the old man cactus , is a species of cactus native to Guanajuato and Hidalgo in eastern Mexico. It is threatened in the wild, but widespread propagation and popularity in cultivation have reduced the demand on wild populations. Cephalocereus senilis is a tall, columnar species with clusters of stems that may grow to 5—15 m tall; the individual stems are usually unbranched, being unable to withstand the weight of side branches adequately. The most striking feature is the shaggy coat of long, white hairs suggestive of unkempt hair on an old man. The coat is a particularly striking silvery white on the young cactus; as the plant ages the stem begins to lose its covering. The flowers are red, yellow, or white, though the plant may not flower until 10—20 years old.
The beauty of cactuses
Cephalocereus senilis - Wikipedia
The Old Man Cactus is a particular looking plant. Unlike more normal cacti, this plant has woolen hairs all along it. It instantly stood out in the dry plant area of Longwood Gardens. It did not surprise me to learn that its non-scientific name is the Old Man Cactus — it looks exactly like that. The hairs on this plant are incredibly striking.
Couple questions on plants/cacti for desert viv
Cacti grow wild in the Americas, from Canada in the north to Argentina in the south. There are at least two hundred varieties in all shapes and sizes, many producing an impressive show of flowers every year. They are easy to care for, providing you give them comparable conditions to those experienced in the wild, including high temperatures, plenty of sunlight and seasonal watering. Cacti are popular plants which thrive for years with a little care.
Synonymous: Cactus bradypus Cactus senilis Cephalophorus senilis Cereus senilis Echinocactus staplesiae Pilocereus senilis. Distribution and habitat: Cephalocereus senilis is a species of cactus native to Guanajuato and Hidalgo in eastern Mexico. It is threatened in the wild, but widespread propagation and popularity in cultivation have reduced the demand on wild populations. The species is one of the dominant elements of the xerophile scrub where it grows and it is restricted to calcareous canyons within xerophile vegetation.