javamoss (plz yell at me if i got two mosses confused) from what ive heard is able to live on land, and will adapt to it over a short period of time, it may even grow better on land, ive used moss in my frog terrarium, i just went to a nearby creek and gathered the moss off of some nearby rocks, but yes moss dries out VERY fast, it would help to have a nice layer of mud under the moss that you always keep wet, as well as spraying once or twice a day!