Tillandsia air plants can live for several years with proper care, typically ranging from 2 to 5 years, but some species can live up to 10 years or more. The key to extending their lifespan is to provide them with the right environment, including bright indirect light, moderate temperatures, and adequate water and humidity. Indoor plants usually require more frequent watering than outdoor ones, and fertilizing them during the growing season can also help. Avoiding direct sunlight, extreme temperatures, and overwatering can also help prevent damage and extend their lifespan, allowing you to enjoy these unique plants for a longer period.