Fertilizer basics - Just what do those numbers on the bag mean? Pick up a box or bag of fertilizer and you'll notice three numbers. Like, 10-10-10 or 15-30-15. Those numbers represent the ratio of Nitrogen (N), Phosphorous (P), and Potassium (K) that are in that bag or box of fertilizer. So, in a bag of 10-10-10 you have an even ratio of 10% Nitrogen, 10% Phosphorous, and 10% Potassium. Are you scratching your head thinking that doesn't add up to 100%? The rest of the bag can consist of micro nutrients which are also great for the plants and some fillers. How do you know which ratio to choose? Get to know each element and what it does for your plants and that will help you determine which fertilizer is right for you.
- Nitrogen is essential for plant growth. It promotes new growth of leaves and stems.
- Phosphorous promotes healthy root growth and stimulates flowering.
- Potassium is important for the plants overall health.