Air plants (Tillandsia spp.) are epiphytes, meaning that in nature they grow on other plants, usually on tree branches. There are hundreds of species and varieties of air plants. They usually have strap-shape or slender triangle-shape leaves that grow in a rosette pattern with new growth appearing from the center. Those with silver foliage tend to be the most drought-tolerant; greener types dry out faster. You can also find colorful species, like Tillandsia maxima that can have coral leaves. Most species produce attractive, tubular or funnel-shaped flowers, too.
Air Plant Care
Don't let the lack of soil scare you away—air plants are easy to care for once you know what they need. You may not have to worry about potting them, but they do still need a certain amount of water and light, plus the right temperatures, just like any other houseplant. You'll know that an air plant is getting what it needs when it sends up flowers. Once the flower dries out, just snip it off and your air plant will keep on growing and eventually making more blooms.
Watering Air Plants
Air plants don't have roots like other plants—they only have a few short ones which are meant to help hold it onto whatever surface it's on. In their native habitats across the Southern US, Mexico, Central and South America, air plants get what they need from high humidity and plentiful rainfall. In your home, you'll need to water your air plants about once a week—some varieties can go two weeks without being watered. Keep an eye on them to determine when your plants seems to need a drink.