Add Yahoo as a preferred source to see more of our stories on Google. The Spruce / Jason Donnelly Even if you make your own compost to feed your plants and amend the soil with plenty of organic matter ...

Those three numbers on the bag or bottle of fertilizer are key to choosing the right product for your plants' needs.

When people purchase fertilizer for roses and plants, they know that it contains three plant nutrients - nitrogen, phosphorous and potassium. But do they know what each one does for the plant? Many ...