Its name was chosen by Backeberg in honor of the German farmer Haage. These are particular cacti of a generally columnar shape, characterized by different habit: in fact, some species remain erect, others tend to develop a prostrate and creeping trend on the ground. Easily recognizable by its dense golden spines, that completely cover the stems. These plants have fragrant flowers, that bloom at night, but you can also admire their beauty even throughout the day. It is a very rare genus which, developing spontaneously in extremely arid coastal areas, with very poor soil and practically no rain, is among the most resistant, thus perfect for any type of outdoor environment! Here are some tips for its proper care and cultivation: It requires a lot of light throughout the year. It is preferable to keep it at mild temperatures and never below 10 °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 it once a week in spring and summer, reduce watering to once every two months in autumn, and to suspend it completely in winter. The best soil is a well draining one, for example formed by a mixture of peat and pumice so that the water does not stagnate. They do not need frequent fertilization, it is sufficient to dilute the fertilizer with watering once a year.