Fish bone meal is a great amendment that you should not pass up, as it is a great marine based alternative to steamed bone meal. Fish bones from the seafood processing industries are dried and then ground up into a meal. This is then granulated to provide an excellent amendment for your garden that provides one of the highest sources of organic phosphorus available. Phosphorus is one of the three major nutrients, and is responsible for a host of plant developments. It is vital to new plants adjusting to a new soil condition, as it stimulates root development, which in turn insures healthier, larger plants due to the increased root mass which is able to absorb more nutrients and moisture from the surrounding soil.