Air plants are also known as epiphytic plants and they are ancient! Bilions of years ago when plants made the switch from water to land these plants were the first to do so. They do not require soil to grow and receive most of their nurients through humidty in the air. They make a lovely, low maintenance addition to your indoor garden and can even bloom!
Keep the plants in indirect sunlight and mist weekly. Misting is not needed if in a high humidty enviornment.