As we discussed in our previous blog post, plants require large amounts of macronutrients to grow and thrive. The secondary nutrients – calcium (Ca), magnesium (Mg) and sulfur (S) – are just as vital to plant growth and development, though they are required in lesser amounts than the macros.
Plants require a total of 16 nutrients to grow, develop, reproduce and remain healthy. Three of these nutrients – nitrogen (N), phosphorus (P) and potassium (K) – are required in relatively large amounts. These are known as macronutrients.