When should I fertilize my crops? - Cooperative Extension: Garden and Yard - University of Maine Cooperative Extension

Question: I am an avid backyard gardener and am familiar with the big three nutrients, Nitrogen, Potassium and Phosphorous, the differences between full, partial shade, etc. I also know the importance soil testing and proper pH. What I don’t know is when to fertilize? I generally buy Neptune’s Harvest and Espoma products as well as use read more