Cool-growing types should be kept at 50 to 60 F during the night and 75 to 80 F during the day. However, many growers raise all plants in the same temperature range with excellent results. Water once or twice a week. In a greenhouse, average humidity is sufficient. Using an evaporative cooling system in warm climates can increase the humidity.
Air movement is essential, especially when humidity is high.
It's important to flush with clear water monthly to leach excess fertilizer, which can burn roots. In cool weather, fertilizer applications once a month are sufficient. Seedlings and smaller plants are often repotted annually. Moisture retention with excellent drainage is needed. Large plants can be divided by pulling or cutting the fans of the leaves apart, into clumps of three to five growths.