Every bag of fertilizer has three numbers on the front of the packaging. Those numbers are nitrogen, phosphorus and potassium ...

However, it's important to know if your soil is low in any of these nutrients before applying NPK fertilizer, or your plants might overdose on one or more of these nutrients. This causes nearly as ...

If you are using an NPK fertilizer to keep your plants healthy, remember that the third number refers to potassium (technically potash, which is a compound of potassium and oxygen) and opt for a ...