Light: Morning sun with afternoon shade in Phoenix; protect from intense summer sun and reflected heat. Acclimate gradually to brighter exposure.
Water: Water thoroughly, then let soil dry completely. Water sparingly during cool winter weather and reduce watering if growth stalls during extreme summer heat.
Soil: Very well-drained, gritty cactus mix with generous pumice, perlite, or small gravel. Use containers with drainage holes; avoid moisture-retentive soil.
Mature size: Individual stems typically reach about 3–6 inches tall and 3–6 inches wide; offsetting plants can form wider clumps.
Bloom: Large, short-lived flowers appear in spring and early summer on established plants; occasional repeat blooms are possible.
Evergreen / deciduous: Evergreen succulent; photosynthetic stems rather than persistent leaves.
Growth rate: Slow to moderate during favorable growing conditions.