Molded Wax

full sun (6 or more hours of sun hitting the leaves per day. South-facing window, no obstructions. Under grow lights, keep them 4-8 inches away for 12-14 hours) to partial shade; at least 4-6 hours of direct sun (right in the window where sun actually hits the leaves. A strong grow light 4-6 inches away can substitute) daily brings out the best red coloration. Indoors, place in a south- or west-facing window.

Prefers low to moderate humidity (40-60%. Most homes are fine, but a pebble tray helps in winter when heating dries the air out), around 30-40%. This plant is native to arid Mexico and does not appreciate muggy conditions.

Well-draining cactus or succulent mix. A 50/50 blend of perlite and peat moss works well, as does commercial cactus soil with added coarse sand.

Mealybugs and aphids are the main pest concerns. Root rot from overwatering is the most common cause of death. Remove dead lower leaves promptly as they attract pests.