Sulcorebutia arenacea

Family

Cactaceae

Native

Bolivia & Argentina

Description

Rebutia arenacea, better known as Sulcorebutia arenacea, is a small, slow-growing cactus with spherical to shortly cylindrical stems with perfectly neat, symmetrical pectinate spination and profuse yellowish orange flowers.

The stems are up to 1.2 inches in diameter and rarely grow taller than 1.4 inches . Flowers are diurnal, long-lasting (about ten days), yellow to yellowish-orange, funnel-shaped, up to 2 inches long, up to 1.6 inches in diameter. Fruits are small, globose, and purple.

Environment

Rebutias thrive in bright light and a 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. 

It requires rich, fast draining porous cactus soil. Repotting may be done every 2-3 years. Ideally use 50% Potting Soil + 15% cocopeat + 25% Organic manure / Vermicompost + 5% charcoal chips + 5% perlite.

Water the soil abundantly when it is dry to the touch. Allow soil to drain thoroughly before watering again. Allow the soil mix to become nearly dry between waterings, but then water thoroughly. Suspend watering in the winter, but mist occasionally.

During the growing season, fertilize with a cacti fertilizer mix.

Landscape Uses