Nitrogen – plants love nitrogen and require high levels during vegetative growth and lower levels during the balance of life. Nitrogen is needed for the production of leaves, stem growth, and building plant cells.
Phosphorous – highest levels of phosphorous are used during germination, seedling, cloning, and flowering stages. Like nitrogen, phosphorus is involved with many vital plant processes - Phosphorus is needed for developing flowers and fruits, and aids in the growth of healthy roots.
Potassium – Potassium is essential to manufacture and movements of sugarsand starches as well as cell division. It seems to be of importance in leaves and at growing points. Potassium is outstanding among the nutrient elements for its mobility and solubility within plant tissues. Processes involving potassium include the formation of carbohydrates and proteins, the regulation of internal plant moisture, as a catalyst and condensing agent of complex substances, as an accelerator of enzyme action, and as a contributor to photosynthesis, especially under low light intensity. Potassium regulates the opening and closing of the stomata by a potassium ion pump.
Magnesium - The outstanding role of magnesium in plant nutrition is as a constituent of the chlorophyll molecule
Calcium - Calcium regulates the transport of other nutrients into the plant and is also involved in the activation of certain plant enzymes. Calcium promotes root growth and helps plants absorb potassium.
Sulfur - Sulfur is a structural component of some amino acids (including cysteine and methionine) and vitamins, and is essential for chloroplast growth and function;
Zinc - Zinc is required in many enzymes and plays an essential role in DNA transcription.
Iron - Iron is necessary for photosynthesis and is present as an enzyme cofactor in plants
Boron - is needed in minute amounts, but how plants use it is still a mystery.
Chlorine - is required for photosynthesis.
Copper - is needed to help produce chlorophyll.
Iron - is needed to produce chlorophyll.
Manganese - aids in the absorption of nitrogen, an essential component in the energy transference process. Magnesium aids in distributing phosphorus throughout plants.
Molybdenum - assists in several chemical reactions that occur within the plant.
Sulfur - aids in the production of plant energy and heightens the effectiveness of phosphorus.