Rebutia deminuta (F.A.C. Weber) Britton & Rose
Crimson Crown Cactus
Rebutia deminuta var. deminuta, Rebutia albiareolata, Rebutia kupperiana, Rebutia minutissima, Rebutia nitida, Rebutia nogalesensis, Rebutia pseudodeminuta, Rebutia pseudominuscula, Rebutia robustispina, Rebutia sanguinea, Rebutia wahliana
Rebutia deminuta is a small, free flowering cactus, solitary or branching around the base to form small mounds up to 4 inches (10 cm) in diameter, barely rising above ground level. This species is very variable and has received many names. The stems are globular to more or less cylindrical, sometimes tapering apically, dark shiny green, up to 2.4 inches (6 cm) tall and up to 1.4 inches (3.5 cm) in diameter. The 11 to 13 ribs are arranged spirally and divided into bumps. The areoles on it are whitish gray. The spines are up to 0.25 inch (6 mm) long, sometimes curved, ocher or pinkish, becoming white with a rusty brown tip. The flowers are red, orange or dark purple, funnel-shaped, up to 1.2 inches (3 cm) long and in diameter and growing in a ring from around the base of the stem.
USDA hardiness zone 9b to 11b: from 25 °F (−3.9 °C) to 50 °F (+10 °C).
How to Grow and Care
If you can grow cacti and succulents successfully, you can likely grow the popular Rebutia without too much trouble. Their water and light requirements are fairly typical for many cacti species, including a cooling period in the winter to promote better blooming. Watering should be done carefully, allowing the plant to almost dry out between waterings. It's imperative that the cactus is not exposed to prolonged dampness and sitting water. Never let your cactus sit in a dish of water. For the best viewing, instead of propagating your offsets, let the plant for a large cluster. When it blooms, this will make a truly beautiful display. Lastly, make sure to fertilizer during the growing season for the best results.
Repot as needed, preferably during the warm season. To repot a cacti, make sure the soil is dry before repotting, then gently remove the pot… – See more at: How to Grow and Care for Rebutia
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