Worm castings are an organic form of fertilizer produced fromearthworms. Worms are fed a very rich organic material whichcontains a wide variety of minerals and trace elements. The Wormsate this material and in its' passage through the worm which isan extremely fertile, humus, organic fertilizer properlydeveloped by the nature for best root growth, containing in richminerals that are essential for plant growth, such asconcentrated nitrates, phosphorus, magnesium, potassium andcalcium. It also contains manganese, copper, zinc, cobalt, borax,iron, carbon and nitrogen and this is the main reason for beingable to provide incredible results.