Egyptian Star Cluster

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 very bright indirect light (3-6 feet from a south or west window, or right next to an east window. Under a grow light, 6-10 inches away works well). Needs at least 3 hours of direct sun (right in the window where sun actually hits the leaves. A strong grow light 4-6 inches away can substitute) indoors to bloom well - place within 1 foot of a south-facing window. low light (more than 8 feet from a window, or a north-facing room. A grow light 10-12 inches away works great if your windows are not cutting it) produces leggy, non-flowering plants.

Adaptable to a wide range of humidity from average household levels up to 95%. A pebble tray or misting (note: misting does not actually raise humidity meaningfully. A pebble tray or humidifier is more effective) helps in dry winter conditions but is not critical.

Well-draining, fertile soil with a pH of 6.0 to 7.5. A mix of loam, sand, and compost in equal parts, or a good quality potting mix with added perlite, works well.

Insufficient light is the main reason for failure to bloom indoors. Leggy growth responds well to pinching. Spider mites and aphids are occasional pests, especially in hot, dry conditions. Whiteflies can be a problem indoors. Deadhead spent flowers to prolong blooming.