The Astrophytum ornatum var. mirbelii is a striking cactus native to the Rio Moctezuma valley in southern Hidalgo and middle Queretaro, Mexico. This cactus is known for its solitary, cylindrical form that can grow up to 2 meters (6.6 feet) in height and 30 centimeters (12 inches) in width. The stem is covered in dense white woolly flakes, which provide protection from the sun. his cactus thrives in well-draining, gritty soil and prefers occasional watering, especially during the winter months. It is also heat and drought-tolerant, making it a resilient addition to any cactus collection