Cyperus alternifolius

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. Bright light produces the best, most upright growth. Morning sun with afternoon shade is ideal indoors. Tolerates medium indoor light but growth slows.

Moderate to high. Being aquatic by nature, it appreciates a humid environment. Bathrooms and kitchens are natural homes. Low humidity causes tip browning.

Rich, moisture-retentive mix with good organic content. A blend of two parts peat, one part loam, and one part sand is traditional. This is one plant where you want the soil to hold moisture rather than drain fast.

Browning leaf tips almost always mean the roots dried out - increase watering immediately. Spider mites can be a problem in low-humidity conditions. Generally has very few serious pest or disease issues.