Tillandsia Air Plants are epiphytes, meaning that in nature they grow on other plants, usually on tree branches. That means they do not need soil to grow, they get the majority of their nutrients from the air around them. There are hundreds of species and varieties of air plants. This mystery box comes in a single pack, three assorted packs, or five assorted packs in assorted sizes. Plant options include but not limited to what is shown in the pictures. All plant types are a choice of ours.