What is 5 10 10 Fertilizer?
All fertilizers have 3 numbers to identify how much of the 3 primary nutrients are in it. The 3 nutrients are nitrogen, phosphorus and potassium. This 3 number label is known as the national standard.
Each number represents the percentage of that nutrient. So 5 10 10 fertilizer would contain 5% nitrogen, 10% phosphorus and 10% potassium.
So what fertilizer numbers do you need?
In order to figure out what fertilizer mixture you need for your garden, you need to have your soil tested. This will tell you what your soil is lacking.
Always use fertilizers as directed by a professional or by the instructions on the bag. Be careful when applying these fertilizers because too much can burn or kill your plants.
There are better ways to fertilize that are 100% safe and easier to apply. I never use commercial fertilizers. I rely on compost and worm castings plus a little Azomite. Compost and worm castings have more nutrients than any commercial fertilizer and are 100% organic. I think compost and worm castings are much cheaper than fertilizers too.