how to make a hill with java moss

[Turtle71]

Does anybody know how to built a hill/mountain with java moss? I've seen something like that in a store and fell in love with it. It looked like a grassy hill with a tree on top.
Has anybody done that before? What would be the substrate underneath and how to keep the hill in place?

 

[Turtle71]

Or was it dwarf hair?

 

[liberator123]

there are many ways to do it... but it depends on which plant. first you need to make the hill using substrate, that should be self explanatory. then, if its a root plant like dwarf hair grass, then just plant it each 1-2 inches apart then let grow. if its a moss, you need to anchor it down either with rocks or plastic mesh. the rest is really up to your artistic skills on making scapes