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 contains all the micronutrients and trace elements that orchids need.
It is recommended to fertilize for three weeks, then the 4th week just apply regular water to flush out any salts which may have built up in the pots.
Our packaging is perfect for those with small collections, each bag contains 100% original Greencare granulated MSU Fertilizer, the package is a resealable zipper to ensure no moisture intrusion.
Small packages were specifically chosen to allow for cheaper shipping options, to help with storage as well as to reduce any large loss from potential moisture exposure.
Nitrate Nitrogen (N) 13%
Nitrate Nitrogen 12.5%
Ammoniacal Nitrogen 0.7%
Phosphorus (P2O5) 3%
Potassium (K2O) 15%
Calcium (Ca) 8%
Magnesium (Water Soluble Mg) 2%
Boron (Soluble B) 0.018%
Copper (Soluble Cu) 0.044%
Iron (Chelated Fe) 0.177%
Manganese (Soluble Mn) 0.088%
Molybdenum 0.018%
Zinc (Soluble Zn) 0.044%
Derived from: ammonium phosphate, boric acid, calcium nitrate, copper sulphate, iron EDTA, magnesium nitrate, manganese sulfate, potassium nitrate, sodium molybdate and zinc sulfate.
Note: MSU is a moisture magnet, this can effect color and granular fertilizers can start to liquefy in the bag due to contact with moisture/humidity. This will vary depending on humidity and how often the container is opened. This does not mean the fertilizer has gone bad. You can still use in liquefied state.
This package will provide you with 35+ teaspoons, enough for your growing season.
Mix at 1/2 teaspoon per gallon of water.
Repacked for your convenience in 8oz or 1/2lbs resealable bags., you'll really need a small amount.