The Old Man Cactus (Espostoa lanata) is a plant in the Cactaceae family of cacti. It is also known as the Cotton Ball Cactus or the Snowball Cactus.
It is native to Peru and Ecuador in South America.
The Old Man Cactus is a tall cylindrical green column covered by dense hair and spines.
The columns grow up to 3-7 metres (10-23 feet) tall and 5-20 centimetres (2-8 inches) wide.
It has 18-25 ribs. It flowers at night.
Photographed in the Botanical Garden, Paris, October 2019.
Photographer: Martina Nicolls