2.5-lbs Miracle-Gro Performance Organics Edibles Organic Natural Vegetable Food Expired

I follow The Millennial Gardener as well, and a channel called Garden Fundamentals. The gentleman that puts out Garden Fundamentals is a soil scientist and dispels a lot of myths surrounding fertilizers. For instance, The only number in the NPK ratio that is actually what you're giving your plants is Nitrogen. So a 10-10-10 fertilizer does have 10 percent nitrogen that will be available to plants. The other numbers in NPK must be converted, because they have to breakdown into an ionic form to be available to plants. To get the % P value, multiply the reported P value by 0.436, or approximately half of the reported value. To get the available K value, multiply the reported NPK value by 0.83. Using this information you can see that a fertilizer with an NPK number of 10-10-10 contains 10% nitrogen, 4.36% phosphorus, and 8.3% potassium, that will be available to plants. Also there is no difference between a molecule of N, P or K from synthetic sources or organic. A molecule of Nitrogen, Phosphorus or Potassium is a molecule of Nitrogen, Phosphorus or Potassium, regardless.

https://youtu.be/l5JwTkleeDE .

Check out James Prigioni too- he is really knowledgeable and more entertaining.