[header] How to create the ultimate woodland terrarium [title] Gather and all the materials needed. [step] Organizing them can help, and one of my favorite ways is to categorize them, such as by the material that they are made of. [title] Pour about 1 " of gravel, hydroton, or other drainage. 
[step] This level of substrate will help keep the plants from soaking up too much water. [title] Layer about 2 " of' woodland mix' substrate over the gravel.