It is essential that plants have both macro- and micronutrients available in adequate quantity to grow. Macronutrients include carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, sulfur and calcium. Micronutrients, which are used in lesser quantities, include magnesium, iron, copper, zinc, manganese, molybdenum and boron.

The elements used in greatest quantity are present in the air. In nature, all other nutrients are derived from soil and mineral sources. These sources may be enhanced when plants are grown in commercial or garden system. Hydroponically grown plants need a solution of necessary elements to replace the earth-borne elements.

Courtesy of NYBG Plant Information