Air plants are famous for their ability to live off of seemingly just air. While they still need some extra boosts of water when you're keeping them at home, they do have very cool natural adaptations that let them pull humidity and all their nutrients straight from the air around them. This means Xeros are comfortable in drier conditions than some other air plants you may be familiar with. For regular care, they will thrive with a misting a few times a week. About once a month, however, you’ll want to give your Xero a more thorough drink. Soak your plant in lukewarm water for 2 minutes, submerging completely. Be sure to gently shake your plant dry afterward so that no water sits pooled on the leaves.
You may need to water (and mist) more or less often, depending on how humid your home is. Your Xero will let you know if it is thirsty: when it needs more water, the leaves will curl tightly. If they start to wrinkle, your air plant is parched! If your Xero’s leaves are very straight you could be watering it too much, which could cause problems like rot. Just follow the cues that your plant gives you and you’ll find a healthy level of water for your leafy friend.
All air plants prefer bright, but indirect light. A room with lots of window space is ideal, as long as your air plant isn’t propped against the glass of a south- or west-facing window, where it could get sunburnt. If you don't have many windows, you won’t kill your plant with fluorescent light. Air plants will make do without actual sunlight, but they won’t be their healthiest.
It is not absolutely necessary to fertilize your air plants, but they will be healthier, bigger, have better flowering, and produce more pups if you do.