Stenocactus multicostatus 5.5cm
Stenocactus multicostatus (Hildm.) A. Berger ex A.W. Hill
Συνώνυμα: Brittonrosea lloydii, Echinofossulocactus multicostatus, Echinofossulocactus zacatecasensis.
It is a globular, light green, tending to olive green, cactus with a concave apex that has a solitary habit, which can occasionally be clustered at the base.
It takes the name 'multicostatus', due to the large number of slender, well furrowed and very wavy ribs, equipped with white downy areoles.
The radial spines are thin, of an almost translucent white color, while the central ones are larger, longer, rigid, of a reddish-white color, which tend to grow upwards.
Flowering occurs in spring-summer at the apex of the plant, generating small, funnel-shaped flowers of a pale pink color with purple central streaks.
- It likes an exposure to full sun in rather airy locations.
- It is preferable to keep it at mild temperatures and never below 5 °C, for this reason it is recommended to shelter it during the winter period.
- Water moderately but only when the soil is completely dry. It is enough to water the plant once a week in spring and summer and suspend watering completely in winter.
- The best soil is a well-draining and porous one, even better if further enriched with 50% or more of inert materials such as pumice, lapilli or clay.
- They do not need frequent fertilization, it is sufficient to dilute the fertilizer with watering once a year.