Nephrolepis exaltata, known as the sword fern or Boston fern, is a species of fern in the family Lomariopsidaceae native to tropical regions throughout the world. An evergreen perennial herbaceous plant, it can reach as high as 40–90 centimetres, and in extreme cases up to 1.5 metres
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%. Although outdoors this plant prefers partial shade or full shade, inside it doesn’t grow in shade and feels best in bright filtered light.
Nephrolepis exaltata is a very popular house plant, often grown in hanging baskets or similar conditions. It is a perennial plant hardy in USDA plant hardiness zones 9-11. Although the fern may appear totally dead due to frost, it will re-emerge in the spring