Powder Puff

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 bright direct light. At least 6-8 hours daily. A south-facing windowsill is ideal indoors. Insufficient light leads to stretched, etiolated growth that ruins the compact shape.

Prefers low humidity. Standard indoor air is fine. No misting (note: misting does not actually raise humidity meaningfully. A pebble tray or humidifier is more effective) or pebble trays needed.

Fast-draining cactus mix with 70-80% mineral content. Add coarse sand, pumice, or perlite to standard cactus soil for best results. Use a pot with drainage holes -- non-negotiable.

Overwatering and root rot are the primary threats. Watch for mealybugs and spider mites. The plant is generally tough and trouble-free when the soil dries between waterings.