When we think of a garden, we think of plants and when we think of plants, we think of soil. It must come as a surprise to many of us that an entire group of plants has nothing to do with soil! They spend their entire life without any contact with soil. At least, the kind of soil that we find on the ground, which we dig, sow, and grow plants in. Collectively, these groups of plants are called epiphytes. They are found in the greatest abundance in the forest canopy, a three-dimensional world set nearly 40 metres above the ground. Forest canopies are called the eighth continent because so little is known about them. Here, everything from a tiny invertebrate, only a few millimetres long to a large mammal such as our relative, the Orangutan, thrives.