Its name comes from Greek and literally means "woolly fruit", in reference to the thick down that covers the big red fruits of this splendid cactus. They are small plants of a globular and solitary shape, which grow spontaneously in extremely arid environments, which is why they have adapted to the climate also with their appearance: from the tuberculate stem, usually dark and opaque, rather long and strong spines grow, usually they are grey or even black, especially at the apex, which protect the plant in its native places and allow it to retain as much water as possible. It is an extremely long-lived cactus, to which, however, you must pay some extra attention. It hardly blooms, only after about ten years of plant's life, when it has reached its maturity, however, if you take care of it, it will give you many satisfactions! Eriosyce is a slow growing geneus, easy to grow. Use a 70% grit and 30% land soil (a very fast mineral draining soil) to prevent rot. It is also recommended to surround its root neck with sand or another material for a faster drainage and better air circulation. Water regularly in summer and keep it dry in winter (or with temperatures below 10°C) to avoid rot and allow dormancy. In summer, feed the plant with a potassium and phosporus fertilizer: do not use a fertiliser rich in nitrogen! It requires strong sunlight to develop its spines, but can tolerate light shade as well. It could need protection during the hottest days of summer. It is hardy to -5°C for short periods of time, but it is not frost tolerant; perfect growing conditions include a minimum temperature of 5°C. To prevent root rot, it is necessaire a good ventilation. Repot every other year to provide fresh soil; after repotting, do not water for a week or more.