Java Moss is just about the easiest plant to grow besides algae. It is also a very slow growing plant. This makes it incredibly difficult for plant farms to propagate it. Healthy moss is in limited supply. Often times Java Moss is a mix of mosses. Because of this we are selling "Java Moss" on wire mesh. The species of moss that are mixed in are Java Moss, Spikey Moss, Peacock Moss, and Christmas Moss. Depending on who we order from it all varies slightly but has similar results for the aquarist. Moss that looks great and is easy to grow. For more information check out our blog post on Java Moss.