Vibrant Fern A popular ferns to grow, with long feathery branches which will add vibrancy to any space a popular sword fern. Provide your fern with a cool place with high humidity indirect sunlight near a window with morning sun, however not in direct sunlight ensuring it is ideally in room with a humidifier or alternatively you can place your fern in a drip tray filled with small stones & water, the water will create humidity as it evaporates. During the summer lightly misting ensuring the soil remains damp.