Rebutia marsoneri hails from the Bolivian Andes, inhabiting limestone rocky slopes at 2500-3500 m altitude. It is a clump-forming, polycarpic species with an early, prolific blooming period distinct within the genus, characterized by numerous fine spines. Globose stems 3-5 cm diameter with conical tubercles arranged spirally. Radial spines thin, 5-10 mm long, white-yellowish. Flowers 3-4 cm wide, bright orange, arise at tubercle bases.
Full direct sunlight exposure, watering limited from spring to late summer, substrate with minimum 70% mineral content (pumice, scoria). Minimum temperature 5 °C. High susceptibility to root rot if waterlogging occurs.