If you go to a local landscape supply store and look on the fertilizer shelves, you may find a variety of different products. Most of those products are going to be N-P-K fertilizers and will have some ratio of primary nutrients (macronutrients), such as 27-9-9 or 10-10-10, combined with a short list of micronutrients and … Continue reading Organic vs. N-P-K Fertilizers: Balanced vs. Specific