soil suitable for small terrariums

What soil should I use for growing moss? Moss can grow on a variety of soils. If you are growing at home, gardening soil, or the soil in your backyard will do. But if you want to plant it on vertical smooth glass like I did, then you need very sticky soil. I know people who use aquarium glue to fix moss on vertical surface. I tried that too. It also works, but it is obviously not as good as using clay. (the above live moss wall terrarium is using red clay to stick moss live o