what would cover volcanic rocks?

[Phoenixphire55]

I have a bunch of big red volcanic pumice looking rocks sitting around. I'm wondering what plant might be able to grow and take root in those rocks and eventually cover them to form like a nice mossy looking rock. I don't know if I described that correctly. Ideally I'm looking for a plant that doesn't grow all wildly but instead like a carpet over the rocks. Is there a low light plant that can do that? Anything other than java moss? lol

 

[Lager]

There are many kinds of moss. Flame, Christmas, among others.

 

[happygirl65]

I think christmas moss would look great and it grows well IME

 

[aqua man]

java moss once established will cover anything as long as you dont have fish that will pick at it (e.g Rainbow sharks)