Kokedama is a traditional Japanese art form that uses moss to provide a container for a plant, which can be a fern, succulent or similar.
The plant can be suspended or placed in a bowl above a drainage layer.
The moss shall be kept moist. The plant can easily be dunked in water and sprayed with a mister. This really depends on its surroundings and weather conditions. Keep sheltered and if it is a fern - in light shade.