What do the numbers & letters on a fertilizer bag mean?

Illustration by Connie Oswald Stofko by Connie Oswald Stofko The numbers and letters on a bag of fertilizer can be confusing. Let’s take a moment to learn what all this means to our Western New York gardens. Letters on fertilizer bag The letters on the fertilizer bag represent primary nutrients: nitrogen, phosphorus and potassium. The abbreviations come from the periodic table of elements: N is nitrogen, P is phosphorus and K is potassium. The standard label displays the nutrients in…