UMASS Fertilizer Trials Recommend Nature’s Source Organic Plant Food 3-1-1

NSOrganicPlantFood3-1-1_hiresIn a recent online fact-sheet at its Extension website, the UMass Amherst Center for Agriculture, Food and the Environment lists Nature’s Source Organic Plant Food 3-1-1 as “the best liquid organic fertilizer,” according to Dr. Douglas Cox, Stockbridge School of Agriculture. It is called-out by the Extension after a number of years of studying the use of organic fertilizers for growing commercial greenhouse crops. The trials evaluated traditional water soluble and granular slow-release chemical fertilizers.

Dr. Cox recommends Nature’s Source Organic Plant Food 3-1-1 as a liquid fertilizer that is readily available, cost effective, OMRI-listed and with good label directions for greenhouses. He also mentions the ease-of-use in how it mixes well with water and can pass fertilizer injectors.


“Nature’s Source is currently the best liquid organic fertilizer,” Cox wrote in his article “Organic Fertilizers – Thoughts on Using Liquid Organic Fertilizers for Greenhouse Plants,” “I have seen no foliar chlorosis yet with this fertilizer. Nature’s source is widely available and a great improvement over its predecessor Pinnacle.”

Nature’s Source Organic Plant Food 3-1-1 contains oilseed extract with Boost Molecules (amino acids). It is also pathogen-free and GMO-free and can be used as a foliar mist without worrying about burning or stretching. It is available in several sizes, as well as packaged for retail sales.

For more information on Nature’s Source Plant Food call 888-839-8722 or visit