Fertilizer Additives- MSU Nutritional Program 13-3-15 + 8Ca + 2Mg

Formulated for Tap Water, Rain Water, and Reverse Osmosis Water, the nutritional program at Michigan State University is vastly different from the majority of recommendations circulating within the horticultural world about the fertilization of orchids. This RO Water Special or 13-3-15, was designed for a pure water source like rainwater or reverse-osmosis (RO) purified water or water that has been treated for city use such as tap water. Due to the extreme variability of well-water mineral content, the RO Water Special formula is the preferred choice for the home grower. This is a terrific fertilizer developed at Michigan State University specifically for orchids. This version is formulated especially for those using Rain water, Reverse Osmosis water, or similar purified, low nutrient water source.The MSU fertilizers are formulated primarily with Nitrogen in Nitrate form for efficient plant utilization. (Ammoniacal Nitrogen is very difficult for orchids to assimilate). This fertilizer