Tillandsias are really very hardy, and require much less attention than other house plants. Like other houseplants, they do need protection from frosts.
Inside, give them bright, filtered light. Submerge the plant in water for 2-3 hours about every two weeks. . If they get some sun indoors, you may need to mist them daily. Fertilize by adding a pinch of Bromeliad or Orchid fertilizer to your mister and use rain or filtered water for best results. If they are growing in a glass globe, then don’t put it directly in front of a window where they get direct sun, because the glass will intensify the sunlight and the heat.
Outside, hang from a tree or on the wall and give them an occasional mist with the hose. The silver-leafed varieties can take more sun as long as it’s humid and they get some moisture.
Water your plant when you first take it home it by soaking 20-30 mins. Take note of the size and color and you should see how happy the plant is. Keep this “picture” in your mind. Then allow your plant to dry almost completely before placing in the globe or open terrarium.
Mist your plant every 4-5 days with ONE Spray for tiny globes, 2-3 sprays for globes 3-5 inches, more if the plant is in a large open globe. The key is to judge the drying time, the smaller the globe, the less circulation, the longer the plant will hold the moisture. If you over water the plant will die.
REMEMBER what your plant looked like after soaking? If it has lost that happy healthy look, take it out and soak it for 30 mins to an hour, shake, allow to almost completely dry and then place it back on its hanger or in the globe.