Genus that includes some cactaceae originating from South America. They usually have a globular appearance and tend to produce numerous suckers; the stem is bright green, with numerous ribs; at the base it has white thorns, on the rest of the stem the thorns are yellowish or brown. In summer it produces numerous white, pink or red flowers.
Exposure: the sulcorebutias need very sunny positions, even if they develop without problems in places where they have some hours of sunshine and others of shade. In winter they should be placed in a cold greenhouse, while tolerating short periods of frost. Watering: from March to October water regularly, leaving the soil to dry well between one watering and another. In winter suspend the watering, remembering that a dry and cold winter favors spring flowering. In the vegetative period, provide fertilizer for cacti with water from the watering every 10-15 days.
Sulcorebutia arenacea: Reproduction
Soil: these cacti prefer loose soils, very well drained, not particularly rich in organic matter; use universal soil lightened with sand or with larger grain size, to increase drainage. Multiplication: propagation can take place by seed, sowing in a mixture of peat and sand in equal parts in spring, which must be kept constantly moist until germination complete and in place not too hot. In spring and summer it is possible to remove the suckers, which are immediately repotted individually. Pests and diseases: the floccan cochineal is a fairly insidious parasite because it often hides at the base of the spines and is difficult to spot.