Nutrients come in organic and synthetic varieties and are available in both liquid and dry form. Nutrients can be separated into two categories, macro and micro nutrients. The macronutrients are nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur. The micronutrients or trace nutrients include iron, manganese, boron, zinc, copper, molybdenum and chlorine. If the nutrients are deficient or abundant you may see burning, yellowing, or curling. You do not want to over or under fertilize. Most fertilizers will have an N-P-K (Nitrogen, Phosphorus and Potassium) on the front of the bottle. In the vegetative phase the “N” will typically be higher. In the bloom phase the “P” will be higher. Potassium “K” is called the regulator of plants. Often called potash, potassium helps plants use water and resist drought. Potassium is important to food crops and enhances the size of fruits and vegetables. You may also consider adding supplements or additives into your nutrient mix. These additives can increase size, flavor, and aroma. When used together nutrients and supplements will help your garden reach its full potential. For more detailed instructions please visit our store in Gainesville, FL. Our highly trained staff can point you in the right direction.