Terrarium plants - Attached plants - Let your terrarium go green!
Especially in the tropics and subtropics, many plants grow attached to other surfaces. Epiphytes grow on trees and shrubs, while plants growing on rock are called lithophytes or epiliths. Some species occur both as epiphytes and as lithophytes, while others are more specialized. Attached plants often have special adaptations to hold on and obtain enough water and nutrients, such as clinging roots, water-storing "cisterns" or humus-collecting leaves. Some live in symbiosis with ants. Many attached plants need a certain layer of loose substrate to root in and can also be kept as ground or potted plants. But there are also true "air plants" that only form clinging roots or have no roots at all. Tillandsias, for example, absorb water and nutrients from rain and moist air through absorbent scales on their leaves, while orchids do this via a special cell layer on their aerial roots.