small cactacea, native to Central America. It has a globular shape, which with the age of the plant tends to become slightly elongated; adult specimens can reach 10-15 cm in height; the stem is green or blue-green, and shows evident tubercles from which numerous spines branch off, which almost completely cover the plant. The thorns of the ancistrocactus are generally clear, hooked in shape. Between the end of winter and the beginning of spring some small flowers, green, yellow or red, bloom at the apex of the plant. The flowers are followed by small oval fruits, which contain some fertile seeds. These plants have very slow growth and it is very difficult for them to stick. Often growers graft ancistrocactus, also called Sclerocactus, on faster developing plants, to make them more vigorous and to make them develop faster.
they are grown in a partially shady place, but which enjoys a few hours a day of direct sunlight. They do not fear much the cold and can easily withstand temperatures even below zero, as long as they are in a place sheltered from humidity and wind. They are generally grown in a cold greenhouse during the winter months.