Moss lover here! In fact it was the acres of moss-draped ground, ledges and rotting logs that that had much to with me immediately falling in love with, and accepting a job at the botanical gardens where I now work.
The definitive book for anyone interested in growing moss is Moss Gardening: Including Lichens, Liverworts, and Other Miniatures by George Schenk…
http://www.amazon.com/exec....s=books
Laura mentioned the recipe for growing moss and I've seen all kinds of variations on this theme...some using beer. Even Martha had a recipe in one of her issues of Living!
Someone mentioned Moss Acres. All Benner, the proprietor, is very nice. A couple years ago when I was in grad school at Cornell and doing a moss project, he sent me free samples of the various taxa he sells. He also sells the black mesh deer fencing that we have found effective at our Botanical Gardens.
Patrick Chasse, the garden designer was preparing to release a book on moss until he was recently hired as Curator of Gardens at the Isabella Stewart Gardner Museum in Boston, which caused him to put the book on hold.
At our Botanical Gardens we have acres of sphagnum moss growing. I hope I am correct in understanding that live sphagnum is appropriate to use whenever cultural information says use LFS. Someone please correct me if this is not right.
Happy moss growing!
John