Canadian Spaghnum Peat Moss
Peat moss is a very stable source of organic material that holds a great deal of water and air and does not decompose quickly. Peat moss is quite acidic (pH 3.5-4.0); limestone is added to the mix to balance the pH. Hyde Park, a Younger, lighter colored peat moss does a better job of providing air space than does older, darker peats that have few large pores for air space.
Hyde Park