What is the difference between white and black peat moss?

White peat moss, often referred to as sphagnum moss, is typically lighter in color and is harvested from living sphagnum plants, making it more fibrous and less decomposed. Black peat moss, on the other hand, is darker and consists of decomposed organic matter, resulting in a denser texture. While both types are used in gardening and horticulture, white peat moss is generally preferred for its aeration properties, while black peat moss offers more nutrients due to its higher degree of decomposition.