Java Moss takes very little effort to grow. It does not have any special water quality requirements, it attaches itself easily to rocks or wood, it will grow in low light conditions, and does not require fertilization. You can easily attach it where you want with superglue. If provided with more intense light and some fertilization, Java Moss will grow faster. Or, leave it alone and control the growth with low nutrients.
Sold in a 4 oz. cup.