How to Read a Fertilizer Grade: What N-P-K Numbers Actually Tell You

Walk into a fertilizer warehouse, farm supply store, greenhouse, or garden center and the first thing most people notice on a fertilizer bag is a group of three numbers. They may read 46-0-0, 10-10-10, 7-0-26, 0-0-50, or 0-0-60. Those numbers look simple, but they are responsible for a surprising amount of confusion. A 46-0-0 fertilizer […]