Peat Moss, Sphagnum
Peat Moss as a soil amendment is dried sphagnum moss used to increase the water holding capacity of soil.
What is it ?
Decayed, dried peat moss is used as a soil conditioner. It is a material harvested from bogs that have accumulated over thousands of years. It has a low pH and is beneficial to plants that prefer an acidic environment. Sphagnum peat moss can potentially increase water retention in soil up to twenty times.