Propagate from runners between late winter and early spring. Of the common cultivated ferns, the Boston fern is the most tolerant to drought. The fern thrives best in humid conditions, so when grown as a house plant it becomes necessary to mist the plant when relative humidity falls below around 80%.
Sunlight: Sun to Partial Shade, Light Shade
Water: In summer Nephrolepis exaltata will need lots of water and frequent misting. As long as room temperatures remains above 13°C (55°F), water the plant plentifully as often as necessary to keep the potting mixture thoroughly moist. Do not allow the potting mixture to dry out. In winter this fern will need less water. If the temperature drops below 13°C (55°F) for more than a day or two, allow the top third of the potting mixture to dry out completely between waterings.
Temprature: Normal room temperatures are suitable throughout the year. Minimum tolerable temperature is 10°C (50°F). For Nephrolepis exaltata grown at temperatures above 21°C (70°F) increase humidity by standing the pot on a tray of damp pebbles and mist-spraying the foliage daily. Nephrolepis exaltata may appear totally dead due to frost, it will re-emerge in the spring.
Fertilizer: Implement a half-strength, balanced liquid fertilizer on a monthly basis during growth.