Rebutia narvaecensis is a small, slow growing cactus, with heads densely covered in brown areoles with short, about 0.04 inch (1 mm) long spines. The stems are spherical to shortly cylindrical, up to 1.2 inches (3 cm) tall and up to 1.4 inches (3.5 cm) in diameter. The flowers are diurnal, long lasting (about 10 days), funnel-shaped, long-necked, up to 2 inches (5 cm) long, up to 1.6 inches (4 cm) in diameter and orange to orange-red in color. The fruits are globose, up to 0.16 inch (4 mm) in diameter and purple red in color.
Rebutia thrive in bright light and range of conditions. Many species can be grown in partial shade to full sun. However, as these are mountain species, they do not appreciate high temperatures, which should be avoided. Throughout the growing season (spring and summer) let the potting soil almost completely dry out between waterings, then water thoroughly. In winter, cut back watering. A rich, fast-draining cactus mix is ideal. During the growing season, fertilize with a cacti fertilizer mix. Suspend feeding during the dormant winter period.