Sunshine Mix is a top quality Canadian sphagnum peat moss with dolomitic lime to adjust to pH 5.0 - 7.0 and to provide calcium and magnesium. Gypsum is added as a source of sulphur and calcium. In addition, Sunshine #1 has a highly soluble nutrient charge equivalent to about one liquid feeding with a complete fertilizer, plus trace elements. It is available in 3.8 cubic foot compressed bales (about 7 cubic feet loose) and 2.8 cubic foot loose bag. One of the best potting mixes there is.