[Overview]
A very slow-growing cactus.
The plant body is often flattened-globose and bluish gray to grayish green.
It has a tuberous root larger than the part above ground.
It produces offsets and forms clusters.
The ribs are very low and there are no spines; its distinctive appearance comes from white wool emerging from the areoles in tufts or balls.
The flowers bloom from the top and are white or pink.
[Cultivation]
Propagate from seed or by cuttings (offsets).
It prefers a sunny, airy place and should be planted in well-drained, well-aerated soil.
From spring to autumn, when the soil dries, water until it runs out of the bottom of the pot, pouring gently at the base of the plant so that the wool does not get wet.
From autumn, gradually reduce the frequency of watering, and withhold water in winter.
Take care not to give too much water or fertilizer.
Pests include scale insects and spider mites.
