How to make a Moss Terrarium? You've come to the right place. Moss Acres offers Moss Starter Sets & Terrarium Kits that include everything you need to create a beautiful moss garden or terrarium in your home or outdoor space. Our kits are an affordable and low-maintenance way to start your own moss garden, with a variety of live mosses, soil, and decorative elements included. Perfect for small spaces, our starter sets are also a great way to create a lush and beautiful moss garden in your outdoor areas that have shade.