n addition to the core nutrients that the plant needs to grow, you'll also find copper, zinc, iron, cobalt, borax, manganese, nitrogen, and carbon. That provides a lot of versatility in nutrients for all different kinds of plants and many different kinds plus npk is there anything else a plants...
n addition to the core nutrients that the plant needs to grow, you'll also find copper, zinc, iron, cobalt, borax, manganese, nitrogen, and carbon. That provides a lot of versatility in nutrients for all different kinds of plants and many different kinds worn castings is your answer