Variegated Century Plant

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) is non-negotiable. Give it at least 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. Too much shade dulls the variegation and weakens the plant.

Prefers dry air. high humidity (60-80%. Group your plants together, set them on a pebble tray with water, or run a humidifier nearby) combined with wet soil is a reliable way to cause root rot.

Fast-draining sandy or rocky soil is essential. Add significant grit or perlite to standard cactus mix. Does not tolerate waterlogged soil.

Root rot from overwatering or poor drainage is the main killer. The sharp terminal spines are a physical hazard -- plant away from paths and children's play areas. Sap can cause skin irritation.